(PHP 8 >= 8.3.0)
posix_pathconf — Returns the value of a configurable limit
$path, int $name): int|false本函数还未编写文档，仅有参数列表。
Returns the value of a configurable limit from name for a file
pathThe name of the file whose limit you want to get.
name
The name of the configurable limit, one of the following.
POSIX_PC_LINK_MAX, POSIX_PC_MAX_CANON
POSIX_PC_MAX_INPUT, POSIX_PC_NAME_MAX
POSIX_PC_PATH_MAX, POSIX_PC_PIPE_BUF
POSIX_PC_CHOWN_RESTRICTED, POSIX_PC_NO_TRUNC
POSIX_PC_ALLOC_SIZE_MIN, POSIX_PC_SYMLINK_MAX
Returns the configurable limit or false.
Throws a ValueError
when path is empty.
示例 #1 posix_pathconf() example
This example will get the max path name's length in bytes for the tmp dir.
<?php
echo posix_pathconf(sys_get_temp_dir(), POSIX_PC_PATH_MAX);
?>以上示例会输出：
4096