{"id":285,"date":"2010-06-07T10:42:44","date_gmt":"2010-06-07T08:42:44","guid":{"rendered":"http:\/\/grummfy.be\/blog\/?p=285"},"modified":"2010-06-04T15:22:08","modified_gmt":"2010-06-04T13:22:08","slug":"espace-de-nom-php-et-chargement-automatique","status":"publish","type":"post","link":"https:\/\/grummfy.be\/blog\/285","title":{"rendered":"Espace de nom PHP et chargement automatique"},"content":{"rendered":"

PHP<\/a> 5.3 ajoute une notion int\u00e9ressante : les espaces de nom (ou namespace en anglais). Les espaces de nom permettent de s\u00e9parer diff\u00e9rents … \u00ab\u00a0espace<\/em>\u00ab\u00a0, permettant ainsi d’avoir deux classe portant le m\u00eame nom. Id\u00e9al pour l’utilisation de framework mais aussi de \u00ab\u00a0l’isolation\u00a0\u00bb de certains composants. Voyons voir comment cr\u00e9er un chargeur automatique (ou autoloader) comprenant les espaces de nom.<\/p>\n

Si vous \u00eates sous Ms Windows, aucun probl\u00e8me un simple spl_autoload_register();<\/em> suffit. Malheureusement, sous *nix un bug existe<\/a> il faudra donc impl\u00e9ment\u00e9 une solution maison.<\/p>\n

Le code<\/h2>\n

Ce code provient du \u00ab\u00a0PHP Standards Working Group<\/a>\u00a0\u00bb :<\/p>\n

\r\nfunction autoload($className)\r\n{\r\n\t$className = ltrim($className, '\\\\');\r\n\t$fileName  = '';\r\n\t$namespace = '';\r\n\tif ($lastNsPos = strripos($className, '\\\\'))\r\n\t{\r\n\t\t$namespace = substr($className, 0, $lastNsPos);\r\n\t\t$className = substr($className, $lastNsPos + 1);\r\n\t\t$fileName  = str_replace('\\\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;\r\n\t}\r\n\t$fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';\r\n\r\n\trequire $fileName;\r\n}\r\n<\/pre>\n<\/p>\n
Pour l’utiliser, il faut d\u00e9finir deux choses :<\/p>\n
    \n
  1. Ne pas oublier de modifier l’include path si n\u00e9cessaire.<\/li>\n
  2. Ajouter cette fonction au chargeur de classes pr\u00e9sent.<\/li>\n<\/ol>\n
    L’exemple<\/h2>\n
    Voici un exemple un peu plus complet.
    \nindex.php<\/p>\n
    \r\n\n
    .\/lib\/grummfy\/test\/Test.php<\/p>\n
    \r\n\n
    .\/lib\/grummfy\/std\/Test.php<\/p>\n
    \r\n\n
    Le r\u00e9sultat devrait \u00eatre :
    \n
    \nJe suis inclus (\/...\/lib\/grummfy\/test\/Test.php)!
    \nBonjour depuis grummfy\\test\\Test
    \nJe suis inclus (\/...\/lib\/grummfy\/std\/Test.php)!
    \nBonjour depuis grummfy\\std\\Test
    \n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"
    PHP 5.3 ajoute une notion int\u00e9ressante : les espaces de nom. Voyons voir comment cr\u00e9er un chargeur automatique (ou autoloader) comprenant ceux-ci.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"webmentions_disabled_pings":false,"webmentions_disabled":false,"footnotes":""},"categories":[10],"tags":[99,110,24,37],"class_list":["post-285","post","type-post","status-publish","format-standard","hentry","category-php","tag-namespace","tag-php","tag-programmation","tag-web"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts\/285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/comments?post=285"}],"version-history":[{"count":6,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts\/285\/revisions"}],"predecessor-version":[{"id":305,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts\/285\/revisions\/305"}],"wp:attachment":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/media?parent=285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/categories?post=285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/tags?post=285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}