How to set file 777 permissions in php

In PHP, you can set file 777 permissions through the "chmod($directory, 0777);" method, where the chmod function is used to change the file mode.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to set file 777 permissions in php?

Use php chmod function:

  chmod($directory, 0777);

chmod() function changes the file mode.

Returns TRUE if successful, otherwise returns FALSE.

Syntax

chmod(file,mode)

Parameters

file required. Specifies the documents to be checked.

mode

Optional. Specify new permissions.

The mode parameter consists of 4 numbers:

The first number is always 0

The second number specifies the owner's permissions

The second The first number specifies the permissions of the user group to which the owner belongs

The fourth number specifies the permissions of everyone else

Possible values ​​(if you need to set multiple permissions, please adjust the numbers below Total):

1 - Execute permission

2 - Write permission

4 - Read permission

Example

<?php
// 所有者可读写，其他人没有任何权限
chmod("test.txt",0600);
// 所有者可读写，其他人可读
chmod("test.txt",0644);
// 所有者有所有权限，其他所有人可读和执行
chmod("test.txt",0755);
// 所有者有所有权限，所有者所在的组可读
chmod("test.txt",0740);
?>

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