chgrp

(PHP 4, PHP 5, PHP 7, PHP 8)

chgrpChanges file group

Description

chgrp(string $filename, string|int $group): bool

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

filename

Path to the file.

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';
$format "%s's Group ID @ %s: %d\n";
printf($format$filenamedate('r'), filegroup($filename));
chgrp($filename8);
clearstatcache(); // do not cache filegroup() results
printf($format$filenamedate('r'), filegroup($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: On Windows, this function fails silently when applied on a regular file.

See Also

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