{"id":194964,"date":"2024-12-30T14:36:00","date_gmt":"2024-12-30T14:36:00","guid":{"rendered":"https:\/\/datascientest.com\/?p=194964"},"modified":"2025-01-08T17:01:29","modified_gmt":"2025-01-08T17:01:29","slug":"regex-tout-savoir","status":"publish","type":"post","link":"https:\/\/datascientest.com\/regex-tout-savoir","title":{"rendered":"Regex (expression r\u00e9guli\u00e8re): Qu&rsquo;est-ce que c&rsquo;est ? Comment s&rsquo;en servir ?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"194964\" class=\"elementor elementor-194964\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b6a36fe e-flex e-con-boxed e-con\" data-id=\"b6a36fe\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f45a933 elementor-widget elementor-widget-heading\" data-id=\"f45a933\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><p class=\"elementor-heading-title elementor-size-default\">Les expressions r\u00e9guli\u00e8res (regex) sont des outils indispensables en informatique pour manipuler, rechercher, et transformer du texte. Leur puissance r\u00e9side dans leur capacit\u00e9 \u00e0 traiter efficacement des ensembles complexes de donn\u00e9es textuelles.<br><br>Dans cet article vous d\u00e9couvrirez un guide complet pour apprendre tout ce qu\u2019il faut sur les regex, leurs usages, et leurs implications.<\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ca584bc e-flex e-con-boxed e-con\" data-id=\"ca584bc\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-520e2fc elementor-widget elementor-widget-heading\" data-id=\"520e2fc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qu\u2019est-ce qu\u2019une expression r\u00e9guli\u00e8re ?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38883b5 elementor-widget elementor-widget-text-editor\" data-id=\"38883b5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"font-weight: 400;\">Une expression r\u00e9guli\u00e8re est une <\/span><b>s\u00e9quence de caract\u00e8res utilis\u00e9e pour d\u00e9finir un motif<\/b><span style=\"font-weight: 400;\"> (<\/span><i><span style=\"font-weight: 400;\">pattern<\/span><\/i><span style=\"font-weight: 400;\">). Ce motif permet de rechercher, extraire ou modifier des cha\u00eenes de caract\u00e8res sp\u00e9cifiques au sein d\u2019un texte. \u00c0 l\u2019instar d\u2019un langage universel, les regex sont <\/span><b>compatibles avec de nombreux environnements<\/b><span style=\"font-weight: 400;\">, comme <\/span><a href=\"https:\/\/datascientest.com\/javascript-tout-savoir\"><span style=\"font-weight: 400;\">JavaScript<\/span><\/a><span style=\"font-weight: 400;\">, Python, PHP, ou encore C#.<\/span><\/p><p><span style=\"font-weight: 400;\">Par exemple :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">La regex <\/span><em><span style=\"font-weight: 400;\">\\d{5}<\/span><\/em><span style=\"font-weight: 400;\"> correspond \u00e0 une suite de cinq chiffres.<\/span><\/li><li><span style=\"font-weight: 400;\">La regex <\/span><em><span style=\"font-weight: 400;\">^Bonjour<\/span><\/em><span style=\"font-weight: 400;\"> identifiera toute cha\u00eene de caract\u00e8res d\u00e9butant par \u00ab\u00a0Bonjour\u00a0\u00bb<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65fc8e4 elementor-widget elementor-widget-image\" data-id=\"65fc8e4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"2193\" height=\"109\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129.png\" class=\"attachment-full size-full wp-image-194969\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129.png 2193w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129-300x15.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129-1024x51.png 1024w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129-768x38.png 768w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129-1536x76.png 1536w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-129-2048x102.png 2048w\" sizes=\"(max-width: 2193px) 100vw, 2193px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c89c106 e-flex e-con-boxed e-con\" data-id=\"c89c106\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-589b645 elementor-widget elementor-widget-heading\" data-id=\"589b645\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">\u00c0 quoi sert une expression r\u00e9guli\u00e8re ?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37a7699 elementor-widget elementor-widget-text-editor\" data-id=\"37a7699\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les regex ne sont pas r\u00e9serv\u00e9es aux d\u00e9veloppeurs : elles trouvent leur utilit\u00e9 dans le <\/span><a href=\"https:\/\/datascientest.com\/web-scraping-tout-savoir\"><span style=\"font-weight: 400;\">web scraping<\/span><\/a><span style=\"font-weight: 400;\">, la <\/span><b>validation de donn\u00e9es<\/b><span style=\"font-weight: 400;\"> (emails, num\u00e9ros de t\u00e9l\u00e9phone), ou encore l\u2019<\/span><a href=\"https:\/\/datascientest.com\/seo-tout-savoir\"><span style=\"font-weight: 400;\">analyse SEO<\/span><\/a><span style=\"font-weight: 400;\"> via des outils comme Google Analytics.<\/span><\/p><p><span style=\"font-weight: 400;\">Les regex peuvent aussi servir pour :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Rechercher et remplacer du texte<\/b><span style=\"font-weight: 400;\"> : Par exemple, supprimer des balises HTML inutiles dans un fichier.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Valider des entr\u00e9es utilisateur<\/b><span style=\"font-weight: 400;\"> : V\u00e9rification d\u2019adresses email, de mots de passe ou de formats sp\u00e9cifiques.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Automatiser des t\u00e2ches r\u00e9p\u00e9titives<\/b><span style=\"font-weight: 400;\"> : Extraire des donn\u00e9es pr\u00e9cises dans des fichiers volumineux.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Am\u00e9liorer le r\u00e9f\u00e9rencement naturel (SEO)<\/b><span style=\"font-weight: 400;\"> : Configurer des filtres dans Google Search Console ou segmenter des rapports dans Looker Studio.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Voici un exemple d&rsquo;une regex qui permet de v\u00e9rifier un num\u00e9ro de t\u00e9l\u00e9phone, conformes au standard E.164 :<\/span><\/p><ul><li><span style=\"font-weight: 400;\">^\\+?[1-9]\\d{1,14}$<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c4826c elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"3c4826c\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Apprendre \u00e0 utiliser le regex<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-33120e9 e-flex e-con-boxed e-con\" data-id=\"33120e9\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-457ee06 elementor-widget elementor-widget-heading\" data-id=\"457ee06\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Une technologie controvers\u00e9e ?\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c13820 elementor-widget elementor-widget-text-editor\" data-id=\"1c13820\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Bien que puissantes, les <\/span><b>regex<\/b><span style=\"font-weight: 400;\"> suscitent parfois des d\u00e9bats en raison de leur complexit\u00e9 apparente et de leur impact sur les performances lorsqu&rsquo;elles sont mal utilis\u00e9es.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-873c76c elementor-widget elementor-widget-heading\" data-id=\"873c76c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Points forts :\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a7d30ef elementor-widget elementor-widget-text-editor\" data-id=\"a7d30ef\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Polyvalence<\/b><span style=\"font-weight: 400;\"> : Applicables dans des contextes vari\u00e9s (d\u00e9veloppement, data science, SEO).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Compatibilit\u00e9 universelle<\/b><span style=\"font-weight: 400;\"> : Fonctionnent sur la plupart des langages et outils.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Efficacit\u00e9<\/b><span style=\"font-weight: 400;\"> : R\u00e9duction significative du temps de traitement pour des t\u00e2ches complexes.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d8292a elementor-widget elementor-widget-heading\" data-id=\"5d8292a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Limites :\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4950155 elementor-widget elementor-widget-text-editor\" data-id=\"4950155\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Courbe d\u2019apprentissage<\/b><span style=\"font-weight: 400;\"> : Les regex peuvent intimider par leur syntaxe.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Performances<\/b><span style=\"font-weight: 400;\"> : Une regex mal con\u00e7ue peut entra\u00eener des ralentissements notables.<\/span><\/li><li><b>Compr\u00e9hension<\/b><span style=\"font-weight: 400;\"> : Leur lecture peut \u00eatre difficile pour des non-initi\u00e9s.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bea44d elementor-widget elementor-widget-heading\" data-id=\"7bea44d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Controverse :\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0baeff5 elementor-widget elementor-widget-text-editor\" data-id=\"0baeff5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les critiques envers les regex se concentrent souvent sur leur complexit\u00e9 syntaxique et leur aspect d\u00e9routant pour les d\u00e9butants. Pourtant, avec des outils comme <\/span><b>Regex101<\/b><span style=\"font-weight: 400;\"> ou des guides bien structur\u00e9s, il est possible de s&rsquo;initier rapidement \u00e0 cette comp\u00e9tence.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-901d106 elementor-widget elementor-widget-image\" data-id=\"901d106\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"298\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-128-e1680030182839-1-1024x382.png\" class=\"attachment-large size-large wp-image-260330\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-128-e1680030182839-1-1024x382.png 1024w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-128-e1680030182839-1-300x112.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-128-e1680030182839-1-768x287.png 768w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/Fichier-128-e1680030182839-1.png 1122w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d5dd3a6 e-flex e-con-boxed e-con\" data-id=\"d5dd3a6\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-75a347c elementor-widget elementor-widget-heading\" data-id=\"75a347c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Cas d'application d'une regex<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-862a20c elementor-widget elementor-widget-text-editor\" data-id=\"862a20c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les expressions r\u00e9guli\u00e8res (<\/span><i><span style=\"font-weight: 400;\">regex<\/span><\/i><span style=\"font-weight: 400;\">) sont des<\/span><span style=\"font-weight: 400;\"> outils indispensables pour de nombreux professionnels, qu\u2019il s\u2019agisse de d\u00e9veloppeurs, de sp\u00e9cialistes en donn\u00e9es ou d\u2019experts en SEO. Pour comprendre leur capacit\u00e9 \u00e0 <strong>traiter efficacement les donn\u00e9es<\/strong>, voici quelques exemples d\u2019utilisation.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a3a921 elementor-widget elementor-widget-heading\" data-id=\"8a3a921\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Gain de temps pour la gestion de contenu\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-907638c elementor-widget elementor-widget-text-editor\" data-id=\"907638c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les regex permettent d\u2019<\/span><b>automatiser de nombreuses t\u00e2ches fastidieuses<\/b><span style=\"font-weight: 400;\">. Par exemple :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Modifier simultan\u00e9ment plusieurs \u00e9l\u00e9ments dans des fichiers HTML ou CSS.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rechercher des balises obsol\u00e8tes dans un site web et les remplacer en une seule op\u00e9ration.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identifier des doublons ou des erreurs dans un texte volumineux.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Ces capacit\u00e9s sont particuli\u00e8rement utiles dans la gestion de blogs ou de bases de donn\u00e9es, o\u00f9 chaque seconde compte.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8264383 elementor-widget elementor-widget-heading\" data-id=\"8264383\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Validation des donn\u00e9es (emails, num\u00e9ros de t\u00e9l\u00e9phone, etc.)\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8dafe4c elementor-widget elementor-widget-text-editor\" data-id=\"8dafe4c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les regex sont couramment utilis\u00e9es pour v\u00e9rifier que les donn\u00e9es fournies <\/span><b>respectent un format pr\u00e9cis<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Adresses email<\/b><span style=\"font-weight: 400;\"> : <em>^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$<br \/><\/em><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Num\u00e9ros de t\u00e9l\u00e9phone<\/b><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"> :\u00a0<\/span><\/span><em>^\\+?[1-9]\\d{1,14}$<\/em><\/li><\/ul><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9b99841 elementor-widget elementor-widget-heading\" data-id=\"9b99841\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Recherche et remplacement de texte\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6815c39 elementor-widget elementor-widget-text-editor\" data-id=\"6815c39\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les regex sont particuli\u00e8rement efficaces pour la <\/span><b>recherche-remplacement \u00e0 grande \u00e9chelle<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p><ul><li><span style=\"font-weight: 400;\">Remplacer tous les attributs <\/span><em><span style=\"font-weight: 400;\">style<\/span><\/em><span style=\"font-weight: 400;\"> dans un code HTML : <em>style=\u00a0\u00bb([^\u00a0\u00bb]*)\u00a0\u00bb<\/em><\/span><\/li><\/ul><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec95cf5 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"ec95cf5\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Se former au regex<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-200f81e elementor-widget elementor-widget-heading\" data-id=\"200f81e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Extraction d\u2019informations pr\u00e9cises dans des fichiers volumineux\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5a661d elementor-widget elementor-widget-text-editor\" data-id=\"f5a661d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Dans des documents volumineux ou des bases de donn\u00e9es complexes, les regex facilitent l\u2019<\/span><b>extraction de donn\u00e9es sp\u00e9cifiques<\/b><span style=\"font-weight: 400;\">. Par exemple :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identifier les adresses email dans un fichier texte.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Extraire les balises <\/span><em><span style=\"font-weight: 400;\">&lt;title&gt;<\/span><\/em><span style=\"font-weight: 400;\"> et leurs contenus dans un document HTML.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Collecter des donn\u00e9es chiffr\u00e9es, comme des prix ou des dates.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Cette application est essentielle dans des secteurs tels que la <\/span><b>data science<\/b><span style=\"font-weight: 400;\"> et le <\/span><b>web scraping.<\/b><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b580e6f elementor-widget elementor-widget-heading\" data-id=\"b580e6f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Applications dans le d\u00e9veloppement web et logiciel\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-820db5a elementor-widget elementor-widget-text-editor\" data-id=\"820db5a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Dans le d\u00e9veloppement, les regex sont omnipr\u00e9sentes. Elles permettent notamment de :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cr\u00e9er des <\/span><b>syst\u00e8mes de formulaires robustes<\/b><span style=\"font-weight: 400;\"> en validant les entr\u00e9es utilisateur (mots de passe, codes postaux, etc.).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>G\u00e9n\u00e9rer des scripts d\u2019automatisation<\/b><span style=\"font-weight: 400;\"> pour manipuler du texte ou des donn\u00e9es.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Construire des API<\/b><span style=\"font-weight: 400;\"> ou des outils d\u2019analyse capables de d\u00e9tecter des motifs pr\u00e9cis.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Les regex contribuent \u00e9galement \u00e0 des projets plus complexes comme le <\/span><a href=\"https:\/\/datascientest.com\/introduction-au-nlp-natural-language-processing\"><span style=\"font-weight: 400;\">traitement automatique du langage naturel (NLP)<\/span><\/a><span style=\"font-weight: 400;\"> et la reconnaissance de motifs dans l\u2019intelligence artificielle.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e656bbc elementor-widget elementor-widget-image\" data-id=\"e656bbc\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"978\" height=\"415\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/image2-5.png\" class=\"attachment-full size-full wp-image-194970\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/image2-5.png 978w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/image2-5-300x127.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/image2-5-768x326.png 768w\" sizes=\"(max-width: 978px) 100vw, 978px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-77743fe e-flex e-con-boxed e-con\" data-id=\"77743fe\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62d5a57 elementor-widget elementor-widget-heading\" data-id=\"62d5a57\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Comment fonctionne la syntaxe des regex ?\n<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c91656 elementor-widget elementor-widget-text-editor\" data-id=\"3c91656\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La syntaxe des expressions r\u00e9guli\u00e8res (<\/span><i><span style=\"font-weight: 400;\">regex<\/span><\/i><span style=\"font-weight: 400;\">) peut sembler complexe au premier abord, mais elle repose sur un <\/span><b>ensemble de r\u00e8gles simples et universelles<\/b><span style=\"font-weight: 400;\">. Apprendre ces bases est essentiel pour tirer pleinement parti des regex dans vos projets. Voici un guide d\u00e9taill\u00e9 pour vous accompagner.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d48e66 elementor-widget elementor-widget-heading\" data-id=\"9d48e66\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Les bases d\u2019une regex\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b89cbe elementor-widget elementor-widget-text-editor\" data-id=\"0b89cbe\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Une regex est compos\u00e9e de <\/span><b>caract\u00e8res <\/b><span style=\"font-weight: 400;\">et de <\/span><b>symboles sp\u00e9ciaux <\/b><span style=\"font-weight: 400;\">permettant de d\u00e9finir un mod\u00e8le (<\/span><i><span style=\"font-weight: 400;\">pattern<\/span><\/i><span style=\"font-weight: 400;\">). Ce mod\u00e8le peut correspondre \u00e0 une cha\u00eene de caract\u00e8res pr\u00e9cise ou \u00e0 un ensemble plus large. Voici les \u00e9l\u00e9ments fondamentaux :<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8016595 elementor-widget elementor-widget-heading\" data-id=\"8016595\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Les ancres (ex. ^, $)\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-211a4fb elementor-widget elementor-widget-text-editor\" data-id=\"211a4fb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les ancres permettent de <\/span><b>d\u00e9finir la position<\/b><span style=\"font-weight: 400;\"> d\u2019un motif dans une cha\u00eene de caract\u00e8res :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">^<\/span><\/em><span style=\"font-weight: 400;\"> : Correspond au <\/span><b>d\u00e9but<\/b><span style=\"font-weight: 400;\"> d\u2019une cha\u00eene.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">^Bonjour<\/span><\/em><span style=\"font-weight: 400;\"> trouve toutes les cha\u00eenes commen\u00e7ant par \u00ab\u00a0Bonjour\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">$<\/span><\/em><span style=\"font-weight: 400;\"> : Correspond \u00e0 la <\/span><b>fin<\/b><span style=\"font-weight: 400;\"> d\u2019une cha\u00eene.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">fin$<\/span><\/em><span style=\"font-weight: 400;\"> trouve toutes les cha\u00eenes se terminant par \u00ab\u00a0fin\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">^mot$<\/span><\/em><span style=\"font-weight: 400;\"> : Correspond exactement \u00e0 la cha\u00eene \u00ab\u00a0mot\u00a0\u00bb.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-714ddbb elementor-widget elementor-widget-heading\" data-id=\"714ddbb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Les quantificateurs (ex. , +, ?)\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1685d97 elementor-widget elementor-widget-text-editor\" data-id=\"1685d97\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les quantificateurs indiquent le <\/span><b>nombre de fois qu\u2019un \u00e9l\u00e9ment doit appara\u00eetre<\/b><span style=\"font-weight: 400;\"> dans une cha\u00eene :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">*<\/span><\/em><span style=\"font-weight: 400;\"> : Z\u00e9ro ou plusieurs occurrences.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">abc*<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0ab\u00a0\u00bb, \u00ab\u00a0abc\u00a0\u00bb, \u00ab\u00a0abcc\u00a0\u00bb, etc.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">+<\/span><\/em><span style=\"font-weight: 400;\"> : Une ou plusieurs occurrences.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">abc+<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0abc\u00a0\u00bb, \u00ab\u00a0abcc\u00a0\u00bb, mais pas \u00ab\u00a0ab\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">?<\/span><\/em><span style=\"font-weight: 400;\"> : Z\u00e9ro ou une occurrence.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">abc?<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0ab\u00a0\u00bb et \u00ab\u00a0abc\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">{n}<\/span><\/em><span style=\"font-weight: 400;\"> : Exactement <\/span><b>n<\/b><span style=\"font-weight: 400;\"> occurrences.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">a{3}<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0aaa\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">{n,}<\/span><\/em><span style=\"font-weight: 400;\"> : Au moins <\/span><b>n<\/b><span style=\"font-weight: 400;\"> occurrences.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">a{2,}<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0aa\u00a0\u00bb, \u00ab\u00a0aaa\u00a0\u00bb, etc.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">{n,m}<\/span><\/em><span style=\"font-weight: 400;\"> : Entre <\/span><b>n<\/b><span style=\"font-weight: 400;\"> et <\/span><b>m<\/b><span style=\"font-weight: 400;\"> occurrences.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">a{2,4}<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0aa\u00a0\u00bb, \u00ab\u00a0aaa\u00a0\u00bb, \u00ab\u00a0aaaa\u00a0\u00bb.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38d440b elementor-widget elementor-widget-image\" data-id=\"38d440b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__279ca7c8-65df-47de-a520-8edd67538597-1024x585.png\" class=\"attachment-large size-large wp-image-260832\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__279ca7c8-65df-47de-a520-8edd67538597-1024x585.png 1024w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__279ca7c8-65df-47de-a520-8edd67538597-300x171.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__279ca7c8-65df-47de-a520-8edd67538597-768x439.png 768w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__279ca7c8-65df-47de-a520-8edd67538597.png 1456w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb2c7f3 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"eb2c7f3\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">D\u00e9couvrir notre formation en SQL<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34b890d elementor-widget elementor-widget-heading\" data-id=\"34b890d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Les op\u00e9rateurs logiques (ex. |)\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff65168 elementor-widget elementor-widget-text-editor\" data-id=\"ff65168\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les op\u00e9rateurs permettent d\u2019<\/span><b>ajouter de la flexibilit\u00e9 <\/b><span style=\"font-weight: 400;\">:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">|<\/span><span style=\"font-weight: 400;\"> : Correspond \u00e0 l\u2019une des options sp\u00e9cifi\u00e9es.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">chien|chat<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0chien\u00a0\u00bb ou \u00ab\u00a0chat\u00a0\u00bb.<\/span><\/li><li><span style=\"font-weight: 400;\">()<\/span><span style=\"font-weight: 400;\"> : Les parenth\u00e8ses peuvent \u00eatre utilis\u00e9es pour grouper des options.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">(chien|chat)s<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0chiens\u00a0\u00bb ou \u00ab\u00a0chats\u00a0\u00bb.<\/span><\/li><\/ul><div>\u00a0<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19630b7 elementor-widget elementor-widget-heading\" data-id=\"19630b7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Les classes de caract\u00e8res (ex. [a-z], \\d)\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ef9d7b elementor-widget elementor-widget-text-editor\" data-id=\"8ef9d7b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li><span style=\"font-weight: 400;\">Les classes de caract\u00e8res permettent de <\/span><b>d\u00e9finir des ensembles<\/b><span style=\"font-weight: 400;\"> ou des types de caract\u00e8res :<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">[a-z]<\/span><\/em><span style=\"font-weight: 400;\"> : Toutes les lettres minuscules.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">[A-Z]<\/span><\/em><span style=\"font-weight: 400;\"> : Toutes les lettres majuscules.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">\\d<\/span><\/em><span style=\"font-weight: 400;\"> : Tous les chiffres (\u00e9quivalent \u00e0 <\/span><em><span style=\"font-weight: 400;\">[0-9]<\/span><\/em><span style=\"font-weight: 400;\">).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">\\w<\/span><\/em><span style=\"font-weight: 400;\"> : Tous les caract\u00e8res alphanum\u00e9riques (lettres, chiffres et _).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">\\s<\/span><\/em><span style=\"font-weight: 400;\"> : Tous les espaces (y compris les tabulations et sauts de ligne).<\/span><\/li><li><span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\"> : Tout caract\u00e8re (sauf les retours \u00e0 la ligne).<\/span><\/li><\/ul><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50f0487 elementor-widget elementor-widget-heading\" data-id=\"50f0487\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Les groupes (capturant et non-capturant)\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bd39d75 elementor-widget elementor-widget-text-editor\" data-id=\"bd39d75\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les groupes permettent d&rsquo;<\/span><b>isoler des parties sp\u00e9cifiques<\/b><span style=\"font-weight: 400;\"> d\u2019une cha\u00eene :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Groupes capturant<\/b><span style=\"font-weight: 400;\"> : Enferm\u00e9s entre parenth\u00e8ses <\/span><span style=\"font-weight: 400;\">(\u2026)<\/span><span style=\"font-weight: 400;\">. Ils enregistrent le contenu pour un traitement ult\u00e9rieur.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">(ab)c<\/span><\/em><span style=\"font-weight: 400;\"> capture \u00ab\u00a0ab\u00a0\u00bb et trouve \u00ab\u00a0abc\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Groupes non-capturant<\/b><span style=\"font-weight: 400;\"> : Pr\u00e9fix\u00e9s par <\/span><span style=\"font-weight: 400;\">?:<\/span><span style=\"font-weight: 400;\"> pour ne pas enregistrer le contenu.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">(?:ab)c<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0abc\u00a0\u00bb sans capturer \u00ab\u00a0ab\u00a0\u00bb.<\/span><\/li><\/ul><div>\u00a0<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca05839 elementor-widget elementor-widget-heading\" data-id=\"ca05839\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h5 class=\"elementor-heading-title elementor-size-small\">Fonctionnement des groupes lors d\u2019un remplacement\n<\/h5>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99d067f elementor-widget elementor-widget-text-editor\" data-id=\"99d067f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les groupes capturant sont souvent utilis\u00e9s avec des <\/span><b>op\u00e9rations de remplacement<\/b><span style=\"font-weight: 400;\">. Chaque groupe est identifi\u00e9 par un num\u00e9ro (<\/span><em><span style=\"font-weight: 400;\">$1<\/span><\/em><span style=\"font-weight: 400;\">, <\/span><em><span style=\"font-weight: 400;\">$2<\/span><\/em><span style=\"font-weight: 400;\">, etc.), correspondant \u00e0 son ordre dans la regex.<\/span><\/p><p><span style=\"font-weight: 400;\">Exemple :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Regex : <\/span><em><span style=\"font-weight: 400;\">(h[ae]llo)<\/span><\/em><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Texte : \u00ab\u00a0hello world\u00a0\u00bb<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remplacement : <\/span><em><span style=\"font-weight: 400;\">$1 world<\/span><\/em><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">R\u00e9sultat : \u00ab\u00a0hello world\u00a0\u00bb.<\/span><\/li><\/ul><div>\u00a0<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb18493 elementor-widget elementor-widget-image\" data-id=\"bb18493\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__82e437a4-8028-4600-9b8b-01bdcc67c3fe-1024x585.png\" class=\"attachment-large size-large wp-image-260833\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__82e437a4-8028-4600-9b8b-01bdcc67c3fe-1024x585.png 1024w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__82e437a4-8028-4600-9b8b-01bdcc67c3fe-300x171.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__82e437a4-8028-4600-9b8b-01bdcc67c3fe-768x439.png 768w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__82e437a4-8028-4600-9b8b-01bdcc67c3fe.png 1456w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47d8473 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"47d8473\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Optimisez vos requ\u00eates SQL<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ccebbe elementor-widget elementor-widget-heading\" data-id=\"0ccebbe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Les op\u00e9rations de recherche-remplacement\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f513442 elementor-widget elementor-widget-text-editor\" data-id=\"f513442\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les regex sont extr\u00eamement puissantes pour la recherche-remplacement dans des fichiers ou du code.<\/span><\/p><p><b>Exemple simple<\/b><span style=\"font-weight: 400;\"> : Supprimer tous les attributs <\/span><span style=\"font-weight: 400;\">style<\/span><span style=\"font-weight: 400;\"> d\u2019un code HTML :<\/span><span style=\"font-weight: 400;\"><br \/><\/span><em><span style=\"font-weight: 400;\">style=\u00a0\u00bb([^\u00a0\u00bb]*)\u00a0\u00bb<\/span><\/em><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cette regex identifie tous les attributs <\/span><em><span style=\"font-weight: 400;\">style<\/span><\/em><span style=\"font-weight: 400;\"> et leur contenu.<\/span><\/li><\/ul><p><b>Exemple complexe<\/b><span style=\"font-weight: 400;\"> : Modifier tous les titres de niveau 2 (<\/span><em><span style=\"font-weight: 400;\">&lt;h2&gt;<\/span><\/em><span style=\"font-weight: 400;\">) :<\/span><span style=\"font-weight: 400;\"><br \/><\/span><em><span style=\"font-weight: 400;\">(&lt;h2.*?&gt;).*?(&lt;\/h2&gt;)<\/span><\/em><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cette regex capture le contenu des balises <\/span><span style=\"font-weight: 400;\">&lt;h2&gt;<\/span><span style=\"font-weight: 400;\"> et permet de le remplacer sans affecter la structure.<\/span><\/li><\/ul><div>\u00a0<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6169a40 elementor-widget elementor-widget-heading\" data-id=\"6169a40\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Les caract\u00e8res g\u00e9n\u00e9riques (wildcards)\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47f5fb9 elementor-widget elementor-widget-text-editor\" data-id=\"47f5fb9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les caract\u00e8res g\u00e9n\u00e9riques ou <\/span><b>jokers <\/b><span style=\"font-weight: 400;\">permettent de matcher une large gamme de motifs :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\"> : Repr\u00e9sente tout caract\u00e8re unique (lettre, chiffre ou symbole).<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">a.c<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0abc\u00a0\u00bb, \u00ab\u00a0a1c\u00a0\u00bb, mais pas \u00ab\u00a0ac\u00a0\u00bb.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">*<\/span><\/em><span style=\"font-weight: 400;\"> : Correspond \u00e0 une s\u00e9quence quelconque (incluant z\u00e9ro caract\u00e8re).<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">.*<\/span><\/em><span style=\"font-weight: 400;\"> trouve tout, de \u00ab\u00a0\u00a0\u00bb (vide) \u00e0 des textes tr\u00e8s longs.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><em><span style=\"font-weight: 400;\">?<\/span><\/em><span style=\"font-weight: 400;\"> : Correspond \u00e0 un caract\u00e8re optionnel.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple : <\/span><em><span style=\"font-weight: 400;\">colo?r<\/span><\/em><span style=\"font-weight: 400;\"> trouve \u00ab\u00a0color\u00a0\u00bb et \u00ab\u00a0colour\u00a0\u00bb.<\/span><\/li><\/ul><div>\u00a0<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c4c6fa elementor-widget elementor-widget-image\" data-id=\"6c4c6fa\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__68c2585f-bab1-4b89-9068-2051966d35e2-1024x585.png\" class=\"attachment-large size-large wp-image-260834\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__68c2585f-bab1-4b89-9068-2051966d35e2-1024x585.png 1024w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__68c2585f-bab1-4b89-9068-2051966d35e2-300x171.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__68c2585f-bab1-4b89-9068-2051966d35e2-768x439.png 768w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_dark-themed_code_editor_interface_displaying__68c2585f-bab1-4b89-9068-2051966d35e2.png 1456w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-647563a elementor-widget elementor-widget-heading\" data-id=\"647563a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Quels outils pour ma\u00eetriser les regex ?\n<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2dbf617 elementor-widget elementor-widget-text-editor\" data-id=\"2dbf617\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Ma\u00eetriser les <\/span><b>expressions r\u00e9guli\u00e8res<\/b><span style=\"font-weight: 400;\"> (<\/span><i><span style=\"font-weight: 400;\">regex<\/span><\/i><span style=\"font-weight: 400;\">) n\u00e9cessite non seulement une bonne compr\u00e9hension de leur syntaxe, mais aussi l\u2019utilisation d\u2019outils adapt\u00e9s et quelques astuces pratiques. Voici les ressources et conseils indispensables pour devenir un expert en regex.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a71814e elementor-widget elementor-widget-heading\" data-id=\"a71814e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">regex101 : une plateforme incontournable<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b73f352 elementor-widget elementor-widget-text-editor\" data-id=\"b73f352\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/regex101.com\/\">Regex101<\/a> est une <\/span><b>plateforme en ligne gratuite<\/b><span style=\"font-weight: 400;\"> qui simplifie grandement l\u2019apprentissage et l\u2019utilisation des regex. Elle permet de :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tester vos regex en temps r\u00e9el.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identifier rapidement les erreurs gr\u00e2ce \u00e0 des explications d\u00e9taill\u00e9es.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Visualiser les groupes capturant et leurs correspondances.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Choisir parmi diff\u00e9rentes saveurs de regex (JavaScript, Python, PHP, etc.).<\/span><\/li><\/ul><div>\u00a0<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d601b9a elementor-widget elementor-widget-heading\" data-id=\"d601b9a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Autres outils (Regex Generator, Regex Tester, etc.)\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c531b1e elementor-widget elementor-widget-text-editor\" data-id=\"c531b1e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Outre regex101, plusieurs autres outils peuvent vous aider \u00e0 <\/span><b>perfectionner vos comp\u00e9tences<\/b><span style=\"font-weight: 400;\"> en regex :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Regex Generator<\/b><span style=\"font-weight: 400;\"> : Id\u00e9al pour g\u00e9n\u00e9rer automatiquement des regex en fonction des crit\u00e8res d\u00e9finis.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Regex Tester<\/b><span style=\"font-weight: 400;\"> : Permet de tester des regex sur des textes longs et complexes, tout en offrant des fonctionnalit\u00e9s de pr\u00e9visualisation.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Expresso<\/b><span style=\"font-weight: 400;\"> : Un logiciel t\u00e9l\u00e9chargeable qui combine test et d\u00e9bogage.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Notepad++ et VSCode<\/b><span style=\"font-weight: 400;\"> : Ces \u00e9diteurs de texte int\u00e8grent des fonctionnalit\u00e9s regex natives pour la recherche et le remplacement.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Ces outils sont parfaits pour optimiser vos workflows, notamment dans le cadre de la <\/span><b>gestion de contenu<\/b><span style=\"font-weight: 400;\"> ou du <\/span><b>d\u00e9veloppement logiciel<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50cb68a elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"50cb68a\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Cr\u00e9\u00e9 des requ\u00eates incassables<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0956e37 elementor-widget elementor-widget-heading\" data-id=\"0956e37\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Astuces et bonnes pratiques\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1910360 elementor-widget elementor-widget-heading\" data-id=\"1910360\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">1 - La combinaison point, \u00e9toile et point d\u2019interrogation (.*?)\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9de09a1 elementor-widget elementor-widget-text-editor\" data-id=\"9de09a1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La s\u00e9quence <\/span><em><span style=\"font-weight: 400;\">.*?<\/span><\/em><span style=\"font-weight: 400;\"> est <strong>l\u2019un des motifs les plus importants en regex<\/strong>. Elle correspond \u00e0 n\u2019importe quelle s\u00e9quence de caract\u00e8res (incluant z\u00e9ro caract\u00e8re) de mani\u00e8re non-greedy, c&rsquo;est-\u00e0-dire qu\u2019elle s\u2019arr\u00eate d\u00e8s qu\u2019une correspondance est trouv\u00e9e.<\/span><\/p><p><span style=\"font-weight: 400;\">Exemple :<\/span><\/p><p><em><span style=\"font-weight: 400;\">&lt;h1&gt;.*?&lt;\/h1&gt;<\/span><\/em><\/p><p><span style=\"font-weight: 400;\">Cette regex capture toutes les balises <\/span><em><span style=\"font-weight: 400;\">&lt;h1&gt;<\/span><\/em><span style=\"font-weight: 400;\"> avec leur contenu, peu importe leur complexit\u00e9.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b8c524a elementor-widget elementor-widget-heading\" data-id=\"b8c524a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">2 - Tester vos regex encore et encore\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c5f94bb elementor-widget elementor-widget-text-editor\" data-id=\"c5f94bb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La pratique est essentielle pour \u00e9viter les erreurs. Testez vos regex dans <strong>diff\u00e9rents sc\u00e9narios<\/strong> et adaptez-les en fonction des sp\u00e9cificit\u00e9s de vos donn\u00e9es. Par exemple :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tester avec des cha\u00eenes en <strong>plusieurs langues<\/strong> pour v\u00e9rifier la compatibilit\u00e9.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Essayer sur des <strong>formats vari\u00e9s<\/strong>, comme des num\u00e9ros de t\u00e9l\u00e9phone internationaux.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4895729 elementor-widget elementor-widget-heading\" data-id=\"4895729\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">3 - Anticiper les exceptions\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9af4e7d elementor-widget elementor-widget-text-editor\" data-id=\"9af4e7d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Certaines donn\u00e9es ou structures textuelles peuvent <\/span><b>contenir des exceptions<\/b><span style=\"font-weight: 400;\">. Adoptez une approche proactive pour \u00e9viter les erreurs :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Utilisez des <\/span><b>lookaheads<\/b><span style=\"font-weight: 400;\"> et <\/span><b>lookbehinds<\/b><span style=\"font-weight: 400;\"> pour inclure ou exclure des motifs sp\u00e9cifiques.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cr\u00e9ez des r\u00e8gles pr\u00e9cises pour ignorer les doublons ou traiter des cas uniques.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Exemple :<\/span><\/p><p><em><span style=\"font-weight: 400;\">\\b(\\w+)\\b(?=.*\\1)<\/span><\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5427738 elementor-widget elementor-widget-heading\" data-id=\"5427738\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">4 - Attention \u00e0 la casse\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f974bba elementor-widget elementor-widget-text-editor\" data-id=\"f974bba\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les regex sont sensibles \u00e0 la casse par d\u00e9faut. Si vous devez <\/span><b>effectuer une recherche insensible \u00e0 la casse<\/b><span style=\"font-weight: 400;\">, ajoutez le modificateur <\/span><span style=\"font-weight: 400;\">\/i<\/span><span style=\"font-weight: 400;\"> \u00e0 votre regex.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\">Exemple :<\/span><\/p><p><em><span style=\"font-weight: 400;\">bonjour \/i<\/span><\/em><\/p><p><span style=\"font-weight: 400;\">Cette regex trouvera \u00ab\u00a0bonjour\u00a0\u00bb, \u00ab\u00a0Bonjour\u00a0\u00bb, ou \u00ab\u00a0BONJOUR\u00a0\u00bb.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2f8548 elementor-widget elementor-widget-heading\" data-id=\"d2f8548\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">5 - Clart\u00e9 et concision\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f982a7 elementor-widget elementor-widget-text-editor\" data-id=\"6f982a7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Une regex concise est plus lisible et facile \u00e0 maintenir. \u00c9vitez les s\u00e9quences inutiles :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Longue : <\/span><em><span style=\"font-weight: 400;\">[0-9][0-9][0-9]<\/span><\/em><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Optimis\u00e9e : <\/span><em><span style=\"font-weight: 400;\">[0-9]{3}<\/span><\/em><span style=\"font-weight: 400;\"> ou simplement <\/span><em><span style=\"font-weight: 400;\">\\d{3}<\/span><\/em><\/li><\/ul><p><span style=\"font-weight: 400;\">Conservez vos <\/span><b>regex fr\u00e9quentes<\/b><span style=\"font-weight: 400;\"> dans un document ou un outil comme Notion pour un acc\u00e8s rapide.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2188e4d elementor-widget elementor-widget-image\" data-id=\"2188e4d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_person_typing_code_on_a_laptop_in_a_professio_8a6fdfd4-5d54-4bec-9ccc-b405cfe0e9cd-1024x585.png\" class=\"attachment-large size-large wp-image-260842\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_person_typing_code_on_a_laptop_in_a_professio_8a6fdfd4-5d54-4bec-9ccc-b405cfe0e9cd-1024x585.png 1024w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_person_typing_code_on_a_laptop_in_a_professio_8a6fdfd4-5d54-4bec-9ccc-b405cfe0e9cd-300x171.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_person_typing_code_on_a_laptop_in_a_professio_8a6fdfd4-5d54-4bec-9ccc-b405cfe0e9cd-768x439.png 768w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/03\/dst_acquisition_A_person_typing_code_on_a_laptop_in_a_professio_8a6fdfd4-5d54-4bec-9ccc-b405cfe0e9cd.png 1456w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d7c4fe elementor-widget elementor-widget-heading\" data-id=\"3d7c4fe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qu\u2019est-ce qu\u2019une saveur de regex ?\n<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c5f886a elementor-widget elementor-widget-text-editor\" data-id=\"c5f886a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les expressions r\u00e9guli\u00e8res (<\/span><i><span style=\"font-weight: 400;\">regex<\/span><\/i><span style=\"font-weight: 400;\">) sont universelles, mais elles pr\u00e9sentent des <strong>variations en fonction des environnements<\/strong> dans lesquels elles sont utilis\u00e9es. Ces diff\u00e9rences, appel\u00e9es \u00ab\u00a0saveurs\u00a0\u00bb (<\/span><i><span style=\"font-weight: 400;\">flavors<\/span><\/i><span style=\"font-weight: 400;\">), d\u00e9finissent les sp\u00e9cificit\u00e9s syntaxiques et fonctionnelles des regex dans diff\u00e9rents langages ou outils. Comprendre ces nuances est essentiel pour tirer le meilleur parti des regex dans vos projets.<\/span><\/p><p><span style=\"font-weight: 400;\">Une saveur de regex fait r\u00e9f\u00e9rence \u00e0 la <\/span><b>variante syntaxique<\/b><span style=\"font-weight: 400;\"> et aux <\/span><b>fonctionnalit\u00e9s prises en charge par un langage<\/b><span style=\"font-weight: 400;\"> ou un outil sp\u00e9cifique. Bien que les concepts de base soient g\u00e9n\u00e9ralement les m\u00eames (comme les classes de caract\u00e8res ou les quantificateurs), chaque saveur a ses propres particularit\u00e9s.<\/span><\/p><p><span style=\"font-weight: 400;\">Par exemple :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Certains langages prennent en charge les <\/span><b>lookbehinds<\/b><span style=\"font-weight: 400;\"> (<\/span><i><span style=\"font-weight: 400;\">regarder en arri\u00e8re<\/span><\/i><span style=\"font-weight: 400;\">), tandis que d\u2019autres non.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Les modificateurs comme <\/span><span style=\"font-weight: 400;\">\/i<\/span><span style=\"font-weight: 400;\"> (insensibilit\u00e9 \u00e0 la casse) ou <\/span><span style=\"font-weight: 400;\">\/g<\/span><span style=\"font-weight: 400;\"> (global) varient en syntaxe selon les environnements.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Les saveurs les plus courantes sont utilis\u00e9es dans des langages tels que <\/span><b>JavaScript<\/b><span style=\"font-weight: 400;\">, <\/span><b>Python<\/b><span style=\"font-weight: 400;\">, <\/span><b>PHP<\/b><span style=\"font-weight: 400;\">, ou dans des outils comme <\/span><b>Excel<\/b><span style=\"font-weight: 400;\"> et <\/span><b>Google Sheets<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1229a96 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"1229a96\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Ma\u00eetrisez les variantes des regex<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ef49c7 elementor-widget elementor-widget-heading\" data-id=\"8ef49c7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Diff\u00e9rences entre les saveurs\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7ef127f elementor-widget elementor-widget-heading\" data-id=\"7ef127f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Regex en JavaScript\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10654f9 elementor-widget elementor-widget-text-editor\" data-id=\"10654f9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Le langage JavaScript utilise une saveur de regex largement utilis\u00e9e dans le <\/span><b>d\u00e9veloppement web<\/b><span style=\"font-weight: 400;\">. Elle est id\u00e9ale pour valider des formulaires, manipuler des cha\u00eenes de caract\u00e8res et travailler avec des APIs.<\/span><\/p><p><span style=\"font-weight: 400;\">Caract\u00e9ristiques principales :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Syntaxe :<\/b><span style=\"font-weight: 400;\"> Les regex sont d\u00e9finies entre deux barres obliques <\/span><em><span style=\"font-weight: 400;\">\/\u2026\/<\/span><\/em><span style=\"font-weight: 400;\">.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Modificateurs :<\/b> <em><span style=\"font-weight: 400;\">\/i<\/span><\/em><span style=\"font-weight: 400;\"> (insensible \u00e0 la casse), <\/span><em><span style=\"font-weight: 400;\">\/g<\/span><\/em><span style=\"font-weight: 400;\"> (recherche globale), <\/span><em><span style=\"font-weight: 400;\">\/m<\/span><\/em><span style=\"font-weight: 400;\"> (multilignes).<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\"><br \/><\/span><em><span style=\"font-weight: 400;\">const regex = \/^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+$\/; <\/span><span style=\"font-weight: 400;\">console.log(regex.test(\u00ab\u00a0email@example.com\u00a0\u00bb)); \/\/ Retourne true<\/span><\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3fa6782 elementor-widget elementor-widget-heading\" data-id=\"3fa6782\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Regex en Python\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20b1fa2 elementor-widget elementor-widget-text-editor\" data-id=\"20b1fa2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><a href=\"https:\/\/datascientest.com\/python-tout-savoir\"><span style=\"font-weight: 400;\">Python<\/span><\/a><span style=\"font-weight: 400;\"> propose une <\/span><b>biblioth\u00e8que d\u00e9di\u00e9e<\/b><span style=\"font-weight: 400;\">, appel\u00e9e <\/span><b>re<\/b><span style=\"font-weight: 400;\">, qui offre une grande flexibilit\u00e9 pour travailler avec des regex.<\/span><\/p><p><span style=\"font-weight: 400;\">Caract\u00e9ristiques principales :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Syntaxe :<\/b><span style=\"font-weight: 400;\"> Les regex sont d\u00e9finies comme des cha\u00eenes brutes avec un pr\u00e9fixe <\/span><span style=\"font-weight: 400;\">r<\/span><span style=\"font-weight: 400;\">.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u00e9thodes :<\/b> <em><span style=\"font-weight: 400;\">re.match()<\/span><\/em><span style=\"font-weight: 400;\">, <\/span><em><span style=\"font-weight: 400;\">re.search()<\/span><\/em><span style=\"font-weight: 400;\">, et <\/span><em><span style=\"font-weight: 400;\">re.findall()<\/span><\/em><span style=\"font-weight: 400;\"> pour diverses op\u00e9rations.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\"><br \/><\/span><em><span style=\"font-weight: 400;\">import re<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">regex = r\u00a0\u00bb^[A-Z][a-z]+$\u00a0\u00bb<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">if re.match(regex, \u00ab\u00a0Bonjour\u00a0\u00bb):<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0print(\u00ab\u00a0Correspondance trouv\u00e9e\u00a0\u00bb)<\/span><\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1b8626 elementor-widget elementor-widget-heading\" data-id=\"a1b8626\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Regex en PHP\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9657fc1 elementor-widget elementor-widget-text-editor\" data-id=\"9657fc1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Le langage PHP utilise la fonction <\/span><b>preg_match()<\/b><span style=\"font-weight: 400;\"> pour travailler avec les regex. Il est souvent utilis\u00e9 dans des contextes de <\/span><b>d\u00e9veloppement web<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Caract\u00e9ristiques principales :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Syntaxe :<\/b><span style=\"font-weight: 400;\"> Les regex sont d\u00e9finies entre des barres obliques <\/span><span style=\"font-weight: 400;\">\/\u2026\/<\/span><span style=\"font-weight: 400;\">.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Fonctionnalit\u00e9s avanc\u00e9es :<\/b><span style=\"font-weight: 400;\"> Support des lookbehinds et des groupes capturant.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\"><br \/><\/span><em><span style=\"font-weight: 400;\">$pattern = \u00ab\u00a0\/\\d{3}-\\d{2}-\\d{4}\/\u00a0\u00bb;<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">$string = \u00ab\u00a0Mon num\u00e9ro est 123-45-6789.\u00a0\u00bb;<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">if (preg_match($pattern, $string)) {<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0echo \u00ab\u00a0Correspondance trouv\u00e9e\u00a0\u00bb;<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">}<\/span><\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c60277 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"0c60277\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"\/formation-sql\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Se former au regex sur PHP<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c0fb31d elementor-widget elementor-widget-heading\" data-id=\"c0fb31d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Regex en Excel\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4da9916 elementor-widget elementor-widget-text-editor\" data-id=\"4da9916\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Excel ne supporte pas directement les regex, mais des solutions existent via :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Power Query<\/b> <b>:<\/b><span style=\"font-weight: 400;\"> Pour manipuler des cha\u00eenes de texte avec des expressions similaires aux regex.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>VBA (Visual Basic for Applications)<\/b> <b>:<\/b><span style=\"font-weight: 400;\"> Pour int\u00e9grer des regex via des scripts personnalis\u00e9s.<\/span><\/li><\/ul><p>\u00a0<\/p><p><em><span style=\"font-weight: 400;\">Dim regex As Object<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">Set regex = CreateObject(\u00ab\u00a0VBScript.RegExp\u00a0\u00bb)<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">regex.Pattern = \u00ab\u00a0^\\d{5}$\u00a0\u00bb<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">If regex.Test(\u00ab\u00a075001\u00a0\u00bb) Then<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0MsgBox \u00ab\u00a0Correspondance trouv\u00e9e\u00a0\u00bb<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">End If<\/span><\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86b4957 elementor-widget elementor-widget-heading\" data-id=\"86b4957\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Regex en Java\n<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-014bc2d elementor-widget elementor-widget-text-editor\" data-id=\"014bc2d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">En <\/span><a href=\"https:\/\/datascientest.com\/langage-java-tout-savoir\"><span style=\"font-weight: 400;\">Java<\/span><\/a><span style=\"font-weight: 400;\">, les regex sont int\u00e9gr\u00e9es dans la biblioth\u00e8que <\/span><b>java.util.regex<\/b><span style=\"font-weight: 400;\">. Elles sont couramment utilis\u00e9es pour manipuler des fichiers texte ou valider des donn\u00e9es.<\/span><\/p><p><span style=\"font-weight: 400;\">Caract\u00e9ristiques principales :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Syntaxe : <\/b><span style=\"font-weight: 400;\">Bas\u00e9e sur des m\u00e9thodes comme <\/span><em><span style=\"font-weight: 400;\">Pattern<\/span><\/em><span style=\"font-weight: 400;\"> et <\/span><em><span style=\"font-weight: 400;\">Matcher<\/span><\/em><span style=\"font-weight: 400;\">.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\"><br \/><\/span><em><span style=\"font-weight: 400;\">import java.util.regex.*;<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">Pattern pattern = Pattern.compile(\u00ab\u00a0^[0-9]{4}$\u00a0\u00bb);<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">Matcher matcher = pattern.matcher(\u00ab\u00a02023\u00a0\u00bb);<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">if (matcher.find()) {<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0System.out.println(\u00ab\u00a0Correspondance trouv\u00e9e\u00a0\u00bb);<\/span><\/em><\/p><p><em><span style=\"font-weight: 400;\">}<\/span><\/em><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64a56ab elementor-widget elementor-widget-text-editor\" data-id=\"64a56ab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Les expressions r\u00e9guli\u00e8res (<\/span><i><span style=\"font-weight: 400;\">regex<\/span><\/i><span style=\"font-weight: 400;\">) sont des <\/span><b>outils incontournables<\/b><span style=\"font-weight: 400;\"> pour manipuler, analyser, et transformer du texte. Elles s\u2019int\u00e8grent dans une multitude d\u2019applications, allant de la <\/span><b>validation de donn\u00e9es<\/b><span style=\"font-weight: 400;\"> \u00e0 l\u2019<\/span><b>automatisation de t\u00e2ches complexes<\/b><span style=\"font-weight: 400;\">. Toutefois, leur utilisation n\u00e9cessite une bonne compr\u00e9hension des concepts de base et des meilleures pratiques.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9efdcb elementor-widget__width-initial elementor-widget elementor-widget-video\" data-id=\"f9efdcb\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=GHTySE_Uk9w&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-video .elementor-widget-container{overflow:hidden;transform:translateZ(0)}.elementor-widget-video .elementor-wrapper{aspect-ratio:var(--video-aspect-ratio)}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{height:100%;width:100%;display:flex;border:none;background-color:#000}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-wrapper{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .elementor-open-inline .elementor-custom-embed-image-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background-size:cover;background-position:50%}.elementor-widget-video .elementor-custom-embed-image-overlay{cursor:pointer;text-align:center}.elementor-widget-video .elementor-custom-embed-image-overlay:hover .elementor-custom-embed-play i{opacity:1}.elementor-widget-video .elementor-custom-embed-image-overlay img{display:block;width:100%;aspect-ratio:var(--video-aspect-ratio);-o-object-fit:cover;object-fit:cover;-o-object-position:center center;object-position:center center}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-custom-embed-image-overlay{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-custom-embed-image-overlay img{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .e-hosted-video .elementor-video{-o-object-fit:cover;object-fit:cover}.e-con-inner>.elementor-widget-video,.e-con>.elementor-widget-video{width:var(--container-widget-width);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-330b336 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"330b336\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/formations-data\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">D\u00e9couvrez nos formations en Data Science<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-64d9c9a e-flex e-con-boxed e-con\" data-id=\"64d9c9a\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0115059 elementor-widget elementor-widget-html\" data-id=\"0115059\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Qu'est-ce qu'une expression r\u00e9guli\u00e8re (regex) ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Une expression r\u00e9guli\u00e8re est une s\u00e9quence de caract\u00e8res d\u00e9finissant un motif pour rechercher, extraire ou modifier des cha\u00eenes de caract\u00e8res sp\u00e9cifiques dans un texte. Compatible avec de nombreux langages comme JavaScript, Python ou PHP, une regex comme '\\\\d{5}' identifie une suite de cinq chiffres.\"\r\n    }\r\n  }, {\r\n    \"@type\": \"Question\",\r\n    \"name\": \"\u00c0 quoi servent les regex ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Les regex sont utilis\u00e9es pour valider des donn\u00e9es (emails, num\u00e9ros de t\u00e9l\u00e9phone), rechercher et remplacer du texte, automatiser des t\u00e2ches r\u00e9p\u00e9titives, ou encore analyser des donn\u00e9es SEO. Par exemple, elles permettent de v\u00e9rifier un num\u00e9ro de t\u00e9l\u00e9phone conforme au standard E.164 avec la regex '^\\\\+?[1-9]\\\\d{1,14}$'.\"\r\n    }\r\n  }, {\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Quels sont les avantages et limites des regex ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Les regex sont polyvalentes, efficaces et compatibles avec de nombreux environnements, r\u00e9duisant le temps de traitement pour des t\u00e2ches complexes. Cependant, elles ont une courbe d'apprentissage \u00e9lev\u00e9e, peuvent ralentir les performances si mal con\u00e7ues, et leur lecture est parfois difficile pour les non-initi\u00e9s.\"\r\n    }\r\n  }, {\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Quels outils utiliser pour ma\u00eetriser les regex ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Des outils comme regex101 permettent de tester des regex en temps r\u00e9el, avec des explications d\u00e9taill\u00e9es. Regex Generator, Regex Tester, et des \u00e9diteurs comme VSCode ou Notepad++ offrent \u00e9galement des fonctionnalit\u00e9s utiles pour tester, d\u00e9boguer et perfectionner vos expressions r\u00e9guli\u00e8res.\"\r\n    }\r\n  }]\r\n}\r\n<\/script>\r\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Les expressions r\u00e9guli\u00e8res (regex) sont des outils indispensables en informatique pour manipuler, rechercher, et transformer du texte. Leur puissance r\u00e9side dans leur capacit\u00e9 \u00e0 traiter efficacement des ensembles complexes de donn\u00e9es textuelles. Dans cet article vous d\u00e9couvrirez un guide complet pour apprendre tout ce qu\u2019il faut sur les regex, leurs usages, et leurs implications. Qu\u2019est-ce [&hellip;]<\/p>\n","protected":false},"author":78,"featured_media":194966,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2497],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Regex (expression r\u00e9guli\u00e8re): Qu&#039;est-ce que c&#039;est ? 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