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PHP chgrp

PHP original manual for chgrp [ show | php.net ]


(PHP 4, PHP 5, PHP 7)

chgrpChanges file group


bool chgrp ( string $filename , mixed $group )

Attempts to change the group of the file filename to group.

Only the superuser may change the group of a file arbitrarily; other users may change the group of a file to any group of which that user is a member.



Path to the file.


A group name or number.

Return Values

Returns TRUE on success or FALSE on failure.


Example #1 Changing a file's group

$format "%s's Group ID @ %s: %d\n";
printf($format$filenamedate('r'), filegroup($filename));
clearstatcache(); // do not cache filegroup() results
printf($format$filenamedate('r'), filegroup($filename));


Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.

Note: When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script that is being executed.

See Also