"realpath_cache_size" is used by PHP to cache the real file system paths of filenames referenced instead of looking them up each time. Every time you perform any of the various file functions or include/require a file and use a relative path, PHP has to look up where that file really exists. PHP caches those values so it doesn’t have to search the current working directory and include_path for the file you are working on.
If your website uses lots of relative path files, think about increasing this value. What value is required can be better estimated after monitoring by how fast the cache fills using realpath_cache_size() after restarting. Its contents can be viewed using realpath_cache_get().
realpath_cache_size
(PHP 5 >= 5.3.2, PHP 7, PHP 8)
realpath_cache_size — Récupère la taille du cache realpath
Description
realpath_cache_size(): int
Récupère la quantité de mémoire utilisée par le cache realpath.
Liste de paramètres
Cette fonction ne contient aucun paramètre.
Valeurs de retour
Retourne la quantité de mémoire utilisée par le cache realpath.
Exemples
Exemple #1 Exemple avec realpath_cache_size()
<?php
var_dump(realpath_cache_size());
?>Résultat de l'exemple ci-dessus est similaire à :
int(412)
Voir aussi
- realpath_cache_get() - Récupère les entrées du cache realpath
- L'option de configuration realpath_cache_size
add a note
User Contributed Notes 3 notes
Stephen Pritchard from Arcanavision ¶
13 years ago
superaap at gmail dot com ¶
14 years ago
Note that the realpath cache is not used if either safe_mode is on or an open_basedir restriction is in effect.
This is having a huge performance effect, causing lots of calls to lstat.
A bugreport has already been filed at http://bugs.php.net/bug.php?id=52312
