How to set file permissions in php

How to set file permissions in php: You can use the chmod function to set file permissions, such as [chmod("/somedir/somefile", 0755);]. The chmod function is used to change the file mode and returns TRUE if successful.

Method:

chmod() function changes the file mode.

Returns TRUE if successful, otherwise returns FALSE.

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Syntax:

chmod(file,mode)

Parameters:

file Required. Specifies the documents to be checked.​

mode ​ Optional. Specify new permissions.

Code implementation:

<?php
chmod("/somedir/somefile", 0755); // 八进制数，正确的 mode 值
// 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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