(PHP 5 >= 5.3.2, PHP 7)
realpath_cache_get — 获取真实目录缓存的详情
获得真实路径缓存的详情。
返回真实路径缓存详情的数组。键是原始路径以及值为具体信息数组，含有该解析的路径，过期时间以及其他的更多选项。
Example #1 realpath_cache_get() example
<?php
var_dump(realpath_cache_get());
?>
以上例程的输出类似于：
array(2) {
["/test"]=>
array(4) {
["key"]=>
int(123456789)
["is_dir"]=>
bool(true)
["realpath"]=>
string(5) "/test"
["expires"]=>
int(1260318939)
}
["/test/test.php"]=>
array(4) {
["key"]=>
int(987654321)
["is_dir"]=>
bool(false)
["realpath"]=>
string(12) "/root/test.php"
["expires"]=>
int(1260318939)
}
}
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