realpath_cache_get
"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)
realpath_cache_size — Получает размер кэша реального пути
Описание
int realpath_cache_size
( void
)
Получает объем памяти, используемой при кэшировании реального пути.
Возвращаемые значения
Возвращает объем использованной памяти для кэширования реального пути.
Примеры
Пример #1 Пример использования realpath_cache_size()
<?php
var_dump(realpath_cache_size());
?>
Результатом выполнения данного примера будет что-то подобное:
int(412)
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User Contributed Notes
realpath_cache_size
Stephen Pritchard from Arcanavision
13-Jan-2011 10:18
superaap at gmail dot com
05-Nov-2010 07:41
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