{"id":456,"date":"2019-02-21T15:42:47","date_gmt":"2019-02-21T14:42:47","guid":{"rendered":"https:\/\/numa-bord.com\/miniblog\/?p=456"},"modified":"2019-02-21T15:46:08","modified_gmt":"2019-02-21T14:46:08","slug":"wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist","status":"publish","type":"post","link":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/","title":{"rendered":"WordPress : Remplacer la fonction d’un plugin utilisant if(!function_exist())"},"content":{"rendered":"

Souvent les plugins wordpress d\u00e9clarent leurs fonctions dans une condition \u00ab\u00a0if(!function_exist())\u00a0\u00bb<\/strong> de ce type : <\/p>\n

if<\/span> (<\/span>!<\/span>function_exists<\/span><\/a>(<\/span>'la_fonction_du_plugin'<\/span>)<\/span>)<\/span> {<\/span>
\n    function<\/span> la_fonction_du_plugin(<\/span>)<\/span> {<\/span>
\n        \/\/code de la fonction<\/span>
\n        \/\/...<\/span>
\n    }<\/span>
\n}<\/span><\/div><\/div>\n

Si le plugin ne propose pas de m\u00e9thode permettant d’overrider le fichier contenant cette fonction ni de hook pour la modifier on se retrouve bloqu\u00e9. Mais on peux tirer avantage que la fonction soit englober dans un \u00ab\u00a0if(!function_exist())\u00a0\u00bb pour ne pas modifier le coeur du plugin est ainsi continuer \u00e0 pouvoir profiter des mises \u00e0 jour.<\/p>\n

La solution consiste \u00e0 d\u00e9clarer la m\u00eame fonction mais avant que le fichier du plugin qui la contient soit charg\u00e9. C’est ici que se situe l’astuce, rien de plus simple quand on sait que wordpress propose un syst\u00e8me de \u00ab\u00a0must use plugins\u00a0\u00bb<\/strong>. Il suffit de placer un fichier php dans le dossier \u00ab\u00a0\/wp-content\/mu-plugins\u00a0\u00bb<\/strong> (on cr\u00e9e le dossier si il n’existe pas). Ce fichier sera automatiquement charg\u00e9 avant tous les autres plugins. On peux placer plusieurs fichiers, peu importe leur noms qui seront alors charg\u00e9 dans l’ordre alphab\u00e9tique. Appelons par exemple notre fichier \u00ab\u00a0load.php\u00a0\u00bb<\/strong> et rempla\u00e7ons notre fonction :<\/p>\n

if<\/span> (<\/span>!<\/span>function_exists<\/span><\/a>(<\/span>'la_fonction_du_plugin'<\/span>)<\/span>)<\/span> {<\/span>
\n    function<\/span> la_fonction_du_plugin(<\/span>)<\/span> {<\/span>
\n        \/\/code modifi\u00e9 de la fonction<\/span>
\n        \/\/...<\/span>
\n    }<\/span>
\n}<\/span><\/div><\/div>\n

C’est tout simple, encore faut il connaitre cette possibilit\u00e9 et l’existence des \u00ab\u00a0must use plugins\u00a0\u00bb. Bien sur on peux se servir de ce fichier pour excuter n’importe quel code avant que le reste ne soit charg\u00e9 (plugins, th\u00e8me)<\/p>\n","protected":false},"excerpt":{"rendered":"

Souvent les plugins wordpress d\u00e9clarent leurs fonctions dans une condition \u00ab\u00a0if(!function_exist())\u00a0\u00bb de ce type : if (!function_exists(’la_fonction_du_plugin’)) {     function la_fonction_du_plugin() {         \/\/code de la fonction         \/\/…     } } Si le plugin ne propose pas de m\u00e9thode permettant d’overrider le fichier contenant cette fonction […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2,6],"tags":[],"class_list":["post-456","post","type-post","status-publish","format-standard","hentry","category-developpement","category-wordpress"],"acf":[],"yoast_head":"\nWordpress : Remplacer la fonction d'un plugin utilisant if(!function_exist()) - Pense b\u00eate d'un d\u00e9veloppeur web<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wordpress : Remplacer la fonction d'un plugin utilisant if(!function_exist()) - Pense b\u00eate d'un d\u00e9veloppeur web\" \/>\n<meta property=\"og:description\" content=\"Souvent les plugins wordpress d\u00e9clarent leurs fonctions dans une condition \u00ab\u00a0if(!function_exist())\u00a0\u00bb de ce type : if (!function_exists('la_fonction_du_plugin')) {     function la_fonction_du_plugin() {         \/\/code de la fonction         \/\/...     } } Si le plugin ne propose pas de m\u00e9thode permettant d’overrider le fichier contenant cette fonction […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\" \/>\n<meta property=\"og:site_name\" content=\"Pense b\u00eate d'un d\u00e9veloppeur web\" \/>\n<meta property=\"article:published_time\" content=\"2019-02-21T14:42:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-02-21T14:46:08+00:00\" \/>\n<meta name=\"author\" content=\"Numa\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Numa\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\"},\"author\":{\"name\":\"Numa\",\"@id\":\"https:\/\/numa-bord.com\/miniblog\/#\/schema\/person\/f9d00acd1703f17e5a6895283eb46a7e\"},\"headline\":\"WordPress : Remplacer la fonction d’un plugin utilisant if(!function_exist())\",\"datePublished\":\"2019-02-21T14:42:47+00:00\",\"dateModified\":\"2019-02-21T14:46:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\"},\"wordCount\":277,\"commentCount\":0,\"articleSection\":[\"D\u00e9veloppement\",\"Wordpress\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\",\"url\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\",\"name\":\"Wordpress : Remplacer la fonction d'un plugin utilisant if(!function_exist()) - Pense b\u00eate d'un d\u00e9veloppeur web\",\"isPartOf\":{\"@id\":\"https:\/\/numa-bord.com\/miniblog\/#website\"},\"datePublished\":\"2019-02-21T14:42:47+00:00\",\"dateModified\":\"2019-02-21T14:46:08+00:00\",\"author\":{\"@id\":\"https:\/\/numa-bord.com\/miniblog\/#\/schema\/person\/f9d00acd1703f17e5a6895283eb46a7e\"},\"breadcrumb\":{\"@id\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/numa-bord.com\/miniblog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"WordPress : Remplacer la fonction d’un plugin utilisant if(!function_exist())\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/numa-bord.com\/miniblog\/#website\",\"url\":\"https:\/\/numa-bord.com\/miniblog\/\",\"name\":\"Pense b\u00eate d'un d\u00e9veloppeur web\",\"description\":\"(php, javascript, Symfony, Wordpress....)\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/numa-bord.com\/miniblog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/numa-bord.com\/miniblog\/#\/schema\/person\/f9d00acd1703f17e5a6895283eb46a7e\",\"name\":\"Numa\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/secure.gravatar.com\/avatar\/f21d1af4658a7106211915940584534c1e0b3eef3f12eb67a697686cad70b64a?s=96&d=mm&r=g\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/f21d1af4658a7106211915940584534c1e0b3eef3f12eb67a697686cad70b64a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/f21d1af4658a7106211915940584534c1e0b3eef3f12eb67a697686cad70b64a?s=96&d=mm&r=g\",\"caption\":\"Numa\"},\"url\":\"https:\/\/numa-bord.com\/miniblog\/author\/negonner\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Wordpress : Remplacer la fonction d'un plugin utilisant if(!function_exist()) - Pense b\u00eate d'un d\u00e9veloppeur web","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/","og_locale":"fr_FR","og_type":"article","og_title":"Wordpress : Remplacer la fonction d'un plugin utilisant if(!function_exist()) - Pense b\u00eate d'un d\u00e9veloppeur web","og_description":"Souvent les plugins wordpress d\u00e9clarent leurs fonctions dans une condition \u00ab\u00a0if(!function_exist())\u00a0\u00bb de ce type : if (!function_exists('la_fonction_du_plugin')) {     function la_fonction_du_plugin() {         \/\/code de la fonction         \/\/...     } } Si le plugin ne propose pas de m\u00e9thode permettant d’overrider le fichier contenant cette fonction […]","og_url":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/","og_site_name":"Pense b\u00eate d'un d\u00e9veloppeur web","article_published_time":"2019-02-21T14:42:47+00:00","article_modified_time":"2019-02-21T14:46:08+00:00","author":"Numa","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Numa","Dur\u00e9e de lecture estim\u00e9e":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#article","isPartOf":{"@id":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/"},"author":{"name":"Numa","@id":"https:\/\/numa-bord.com\/miniblog\/#\/schema\/person\/f9d00acd1703f17e5a6895283eb46a7e"},"headline":"WordPress : Remplacer la fonction d’un plugin utilisant if(!function_exist())","datePublished":"2019-02-21T14:42:47+00:00","dateModified":"2019-02-21T14:46:08+00:00","mainEntityOfPage":{"@id":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/"},"wordCount":277,"commentCount":0,"articleSection":["D\u00e9veloppement","Wordpress"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/","url":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/","name":"Wordpress : Remplacer la fonction d'un plugin utilisant if(!function_exist()) - Pense b\u00eate d'un d\u00e9veloppeur web","isPartOf":{"@id":"https:\/\/numa-bord.com\/miniblog\/#website"},"datePublished":"2019-02-21T14:42:47+00:00","dateModified":"2019-02-21T14:46:08+00:00","author":{"@id":"https:\/\/numa-bord.com\/miniblog\/#\/schema\/person\/f9d00acd1703f17e5a6895283eb46a7e"},"breadcrumb":{"@id":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/numa-bord.com\/miniblog\/wordpress-remplacer-la-fonction-dun-plugin-utilisant-iffunction_exist\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/numa-bord.com\/miniblog\/"},{"@type":"ListItem","position":2,"name":"WordPress : Remplacer la fonction d’un plugin utilisant if(!function_exist())"}]},{"@type":"WebSite","@id":"https:\/\/numa-bord.com\/miniblog\/#website","url":"https:\/\/numa-bord.com\/miniblog\/","name":"Pense b\u00eate d'un d\u00e9veloppeur web","description":"(php, javascript, Symfony, Wordpress....)","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/numa-bord.com\/miniblog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/numa-bord.com\/miniblog\/#\/schema\/person\/f9d00acd1703f17e5a6895283eb46a7e","name":"Numa","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/secure.gravatar.com\/avatar\/f21d1af4658a7106211915940584534c1e0b3eef3f12eb67a697686cad70b64a?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/f21d1af4658a7106211915940584534c1e0b3eef3f12eb67a697686cad70b64a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f21d1af4658a7106211915940584534c1e0b3eef3f12eb67a697686cad70b64a?s=96&d=mm&r=g","caption":"Numa"},"url":"https:\/\/numa-bord.com\/miniblog\/author\/negonner\/"}]}},"_links":{"self":[{"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/posts\/456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/comments?post=456"}],"version-history":[{"count":5,"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/posts\/456\/revisions"}],"predecessor-version":[{"id":461,"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/posts\/456\/revisions\/461"}],"wp:attachment":[{"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/media?parent=456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/categories?post=456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/numa-bord.com\/miniblog\/wp-json\/wp\/v2\/tags?post=456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}