function addGroup() {
// *************************
// Add User to .htgroups
// *************************
global $username;
$dir = "/home/mathieu/public_html/clients/system/.htgroups";

$lines = file ($dir);
$i = 0;
foreach ($lines as $line_num => $line) {
	if ($i == 0) {
		rtrim($line);
		$ligne_editor = $line . " " . $username;
	} else {
		rtrim($line);
		$ligne_editor .= "\r \n" . $line;
	}
	$i++;
}