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chgrp

Description

Changes file group

Only the superuser may change the group of a file.

Syntax

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

Parameters

filename

Path to the file.

group

A group name or number.

Return

Returns true on success or false on failure.

Examples

1 · filename group

<?

$filename = '1.txt';
$group = 8;

$return = chgrp($filename, $group);

var_export($return);

?>
true

2

<?

$format = "filename: %s\ngroup: %d\n";
$filename = '1.txt';

printf($format, $filename, filegroup($filename));

$group = 8;
chgrp($filename, $group);
clearstatcache(); // do not cache filegroup() results

printf($format, $filename, filegroup($filename));

?>
filename: 1.txt
group: 0
filename: 1.txt
group: 8
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