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posix_pathconf

(PHP 8 >= 8.3.0)

posix_pathconf — Returns the value of a configurable limit

说明

posix_pathconf(string $path, int $name): int|false
警告

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 path

参数

path

The 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.

返回值

Returns the configurable limit or false.

错误／异常

Throws a ValueError when path is empty.

示例

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

参见