{"id":46,"date":"2012-08-24T15:41:42","date_gmt":"2012-08-24T13:41:42","guid":{"rendered":"http:\/\/www.olivierdoucet.info\/blog\/?p=46"},"modified":"2012-08-24T15:41:42","modified_gmt":"2012-08-24T13:41:42","slug":"migrer-de-php-5-2-a-php-5-3","status":"publish","type":"post","link":"https:\/\/www.olivierdoucet.info\/blog\/2012\/08\/24\/migrer-de-php-5-2-a-php-5-3\/","title":{"rendered":"Migrer de PHP 5.2 \u00e0 PHP 5.3"},"content":{"rendered":"<p>PHP 5.2 n&rsquo;est plus maintenu depuis janvier 2011, il devient donc tant de migrer sur la version 5.3 (surtout que dor\u00e9navant, la 5.4 est sortie en stable &#8230;).<\/p>\n<p>Mais une migration doit toujours se pr\u00e9parer, afin qu&rsquo;elle se passe le mieux possible sans grosse interruption de service. Voici donc une pr\u00e9sentation des incompatibilit\u00e9s entre ces deux versions.<\/p>\n<p><!--more--><\/p>\n<h1>Changements non r\u00e9tro compatibles<\/h1>\n<ul>\n<li>clearstatcache : quand vous utilisez des fonctions qui acc\u00e8dent aux propri\u00e9t\u00e9s d&rsquo;un fichier (comme stat, is_dir, filemtime &#8230;), le r\u00e9sultat est mis en cache pour des raisons de performance. Depuis la version 5.3, l&rsquo;appel \u00e0 la fonction <a title=\"Documentation clearstatcache()\" href=\"http:\/\/fr.php.net\/manual\/fr\/function.clearstatcache.php\" target=\"_blank\">clearstatcache()<\/a> ne reset pas le &lsquo;realpath_cache&rsquo;. Pour cela il faut utiliser :<br \/>\n<code>clearstatcache(true);<\/code><\/li>\n<li>Avant 5.3, <a title=\"realpath()\" href=\"http:\/\/fr.php.net\/manual\/fr\/function.realpath.php\" target=\"_blank\">realpath()<\/a> fonctionnait m\u00eame si le dernier \u00e9l\u00e9ment du chemin n&rsquo;existait pas (sur plates-fomres *BSD). Maintenant, une erreur est renvoy\u00e9e (donc le chemin doit exister). Pour moi, ce point est davantage un bug qui aurait \u00e9galement d\u00fb \u00eatre corrig\u00e9 sur 5.2 mais passons &#8230;<\/li>\n<li>Avec les fonctions de la famille de <a title=\"Documentation call_user_func()\" href=\"http:\/\/fr.php.net\/manual\/en\/function.call-user-func.php\" target=\"_blank\">call_user_func()<\/a>, Les mots clefs $this, parent:: et self:: changent de comportement.<\/li>\n<li>Les fonctions de tri de tableau (<a href=\"http:\/\/www.php.net\/manual\/en\/function.natsort.php\">natsort()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.natcasesort.php\">natcasesort()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.usort.php\">usort()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.uasort.php\">uasort()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.uksort.php\">uksort()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.array-flip.php\">array_flip()<\/a>, et\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.array-unique.php\">array_unique()<\/a>) pouvaient trier des objets. Depuis 5.3, vous devez caster l&rsquo;objet en tableau pour que cela fonctionne. Exemple :<br \/>\n<code>uksort( (array) $myobject);<\/code><\/li>\n<li>Si vous utilisez des fonctions qui attendent des arguments par r\u00e9f\u00e9rence (avec &lsquo;&amp;&rsquo;), le comportement des appels a chang\u00e9 :<br \/>\n<code>mafonction(CONSTANTE); \/\/ renverra une fatale.<\/code><br \/>\nIl faut utiliser :<br \/>\n<code>$var = CONSTANTE;<br \/>\nmafonction($var); \/\/OK<\/code><\/li>\n<li>Si vous utilisez l&rsquo;extension mysqlnd (\u00e0 la compilation de PHP), \u00e0 partir de 5.3 vous ne pouvez plus vous connecter \u00e0 des serveurs SQL qui utilisent encore l&rsquo;ancienne authentification (&lt; MySQL 4.1). Un appel \u00e0 mysql_connect() renverra maintenant une erreur fatale.<\/li>\n<li>La nouvelle librairie MySQLND ne lit plus les fichiers de configuration MySQL (my.cnf \/ my.ini). De m\u00eame pour PDO si le support MySQL est activ\u00e9. Vous pouvez utiliser <a title=\"Documentation mysqli_options()\" href=\"http:\/\/fr.php.net\/manual\/en\/mysqli.options.php\" target=\"_blank\">mysqli_options()<\/a> pour cela.<\/li>\n<li>Si vous utilisez la classe\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/class.splfileinfo.php\">SplFileInfo<\/a>, le \/ final est maintenant supprim\u00e9 lorsque vous manipulez des r\u00e9pertoires.<\/li>\n<li>La m\u00e9thode magique <a title=\"Documentation __toString()\" href=\"http:\/\/fr.php.net\/manual\/en\/language.oop5.magic.php#object.tostring\" target=\"_blank\">__toString()<\/a> n&rsquo;accepte plus d&rsquo;arguments.<\/li>\n<li>les m\u00e9thodes magiques\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/language.oop5.overloading.php#object.get\">__get()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/language.oop5.overloading.php#object.set\">__set()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/language.oop5.overloading.php#object.isset\">__isset()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/language.oop5.overloading.php#object.unset\">__unset()<\/a>, et\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/language.oop5.overloading.php#object.call\">__call()<\/a>\u00a0doivent \u00eatre publiques et non statiques.<\/li>\n<li>La m\u00e9thode magique <a href=\"http:\/\/fr.php.net\/manual\/en\/language.oop5.overloading.php#object.call\" target=\"_blank\">__call()<\/a> est maintenant appel\u00e9e quand on acc\u00e8de \u00e0 des m\u00e9thodes priv\u00e9es ou prot\u00e9g\u00e9es.<\/li>\n<li>Pour des raisons de s\u00e9curit\u00e9, les fonctions\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.func-get-arg.php\">func_get_arg()<\/a>,\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.func-get-args.php\">func_get_args()<\/a>\u00a0et\u00a0<a href=\"http:\/\/www.php.net\/manual\/en\/function.func-num-args.php\">func_num_args()<\/a>\u00a0ne peuvent \u00eatre appel\u00e9es que dans le m\u00eame fichier que la fonction (dans le cas o\u00f9 la fonction ferait un include ou un require par exemple).<\/li>\n<li>L&rsquo;extension Hash a \u00e9t\u00e9 supprim\u00e9e et remplac\u00e9e par une couche d&rsquo;\u00e9mulation qui ne supporte pas l&rsquo;algorithme de hashing &lsquo;s2k&rsquo; (peu courant).<\/li>\n<li>Les mots suivants sont maintenant r\u00e9serv\u00e9s et ne peuvent \u00eatre utilis\u00e9s (pour des fonctions, des classes, etc.) :\n<ul>\n<li><a href=\"http:\/\/fr.php.net\/manual\/en\/control-structures.goto.php\" target=\"_blank\">goto<\/a><\/li>\n<li><a href=\"http:\/\/fr.php.net\/manual\/en\/language.namespaces.php\" target=\"_blank\">namespace<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div><\/div>\n<h1>Conclusion<\/h1>\n<p><span style=\"font-size: medium;\"><span style=\"line-height: 24px;\">Je pense que les points importants qui peuvent poser probl\u00e8me sont les m\u00e9thodes magiques d&rsquo;objet que vous auriez pu mal d\u00e9finir, ainsi que les fonctions de tri de tableau (utilisation totalement d\u00e9tourn\u00e9e). Le reste est vraiment tr\u00e8s rare, et il y a peu de chance que vous utilisiez les points en question. <\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP 5.2 n&rsquo;est plus maintenu depuis janvier 2011, il devient donc tant de migrer sur la version 5.3 (surtout que dor\u00e9navant, la 5.4 est sortie en stable &#8230;). Mais une migration doit toujours se pr\u00e9parer, afin qu&rsquo;elle se passe le mieux possible sans grosse interruption de service. Voici donc une pr\u00e9sentation des incompatibilit\u00e9s entre ces &hellip; <a href=\"https:\/\/www.olivierdoucet.info\/blog\/2012\/08\/24\/migrer-de-php-5-2-a-php-5-3\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Migrer de PHP 5.2 \u00e0 PHP 5.3<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6],"tags":[29,40],"class_list":["post-46","post","type-post","status-publish","format-standard","hentry","category-informatique","category-php-sql","tag-php","tag-php5"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Migrer de PHP 5.2 \u00e0 PHP 5.3 - My thoughts<\/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:\/\/www.olivierdoucet.info\/blog\/2012\/08\/24\/migrer-de-php-5-2-a-php-5-3\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Migrer de PHP 5.2 \u00e0 PHP 5.3 - My thoughts\" \/>\n<meta property=\"og:description\" content=\"PHP 5.2 n&rsquo;est plus maintenu depuis janvier 2011, il devient donc tant de migrer sur la version 5.3 (surtout que dor\u00e9navant, la 5.4 est sortie en stable &#8230;). Mais une migration doit toujours se pr\u00e9parer, afin qu&rsquo;elle se passe le mieux possible sans grosse interruption de service. 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