PHP chmod() 函数

示例

更改 "test.txt" 文件的权限：

<?php
// Read and write for owner, nothing for everybody else
chmod("test.txt",0600);

// Read and write for owner, read for everybody else
chmod("test.txt",0644);

// Everything for owner, read and execute for everybody else
chmod("test.txt",0755);

// Everything for owner, read for owner's group
chmod("test.txt",0740);
?>

定义和用法

chmod() 函数更改指定文件的权限。

语法

chmod( file, mode)

参数值

Parameter	Description
file	Required. Specifies the path to the file
mode	Required. Specifies the new permissions. The mode parameter consists of four numbers: The first number is always zero The second number specifies permissions for the owner The third number specifies permissions for the owner's user group The fourth number specifies permissions for everybody else Possible values (to set multiple permissions, add up the following numbers): 1 = execute permissions 2 = write permissions 4 = read permissions

Parameter

Description

file

Required. Specifies the path to the file

mode

Required. Specifies the new permissions.

The mode parameter consists of four numbers:

The first number is always zero
The second number specifies permissions for the owner
The third number specifies permissions for the owner's user group
The fourth number specifies permissions for everybody else

Possible values (to set multiple permissions, add up the following numbers):

1 = execute permissions
2 = write permissions
4 = read permissions

技术细节

返回值：	TRUE 成功，FALSE 失败
PHP 版本：	4.0+

❮ PHP 文件系统参考