lchgrp

Function name: lchgrp()

Function description: The lchgrp() function is used to modify the group to which a file or directory belongs, similar to the chgrp() function. The difference is that the lchgrp() function can operate on a symbolic link, while the chgrp() function can only operate on the target pointed to by the symbolic link.

Applicable version: The lchgrp() function is available in PHP 4.0.5 and later.

Syntax: bool lchgrp ( string $filename , mixed $group )

parameter:

• $filename: The path to the file or directory of the group to which you want to modify.
• $group: The name or group ID of the new group to which it belongs. Can be a string or an integer.

Return value: Return true on success, and false on failure.

Example 1: Modify the file's group to "admin".

 $filename = '/path/to/file.txt'; $group = 'admin'; if (lchgrp($filename, $group)) { echo "所属组修改成功！"; } else { echo "所属组修改失败！"; }

Example 2: Modify the group to which the directory belongs to a group with a group ID of 1000.

 $dirname = '/path/to/directory'; $group = 1000; if (lchgrp($dirname, $group)) { echo "所属组修改成功！"; } else { echo "所属组修改失败！"; }

Notes:

• Executing the lchgrp() function requires sufficient file system permissions.
• If the file or directory does not exist, or the file or directory cannot be accessed, the lchgrp() function will return false.
• On Windows operating systems, the lchgrp() function is not available.