array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'en', ), 'this' => array ( 0 => 'function.chgrp.php', 1 => 'chgrp', ), 'up' => array ( 0 => 'ref.filesystem.php', 1 => 'Filesystem Functions', ), 'prev' => array ( 0 => 'function.basename.php', 1 => 'basename', ), 'next' => array ( 0 => 'function.chmod.php', 1 => 'chmod', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/filesystem/functions/chgrp.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 4, PHP 5, PHP 7, PHP 8)
chgrp — Changes file 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.
filename
Path to the file.
group
A group name or number.
Example #1 Changing a file's group
<?php
$filename = 'shared_file.txt';
$format = "%s's Group ID @ %s: %d\n";
printf($format, $filename, date('r'), filegroup($filename));
chgrp($filename, 8);
clearstatcache(); // do not cache filegroup() results
printf($format, $filename, date('r'), filegroup($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: On Windows, this function fails silently when applied on a regular file.