CHGRP(3) 1 CHGRP(3) chgrp - Changes file group SYNOPSIS bool chgrp (string $filename, mixed $group) DESCRIPTION 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. PARAMETERS o $filename - Path to the file. o $group - A group name or number. RETURN VALUES Returns TRUE on success or FALSE on failure. EXAMPLES Example #1 Changing a file's group <?php $filename = 'shared_file.txt'; $format = "%s's Group ID @ %s: %d "; printf($format, $filename, date('r'), filegroup($filename)); chgrp($filename, 8); clearstatcache(); // do not cache filegroup() results printf($format, $filename, date('r'), filegroup($filename)); ?> NOTES 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 chown(3), chmod(3). PHP Documentation Group CHGRP(3)