Patch pfSense <2.3 - Affichage hostname sur form de login

$authfile = '/etc/inc/authgui.inc' ;
$page = file_get_contents($authfile);

$search = 'value="<?=gettext("Login"); ?>" tabindex="3" />';
$replace = $search . " sur <strong><?=\$config['system']['hostname']; ?></strong>";

$result = str_replace($search,$replace,$page);

if (file_put_contents($authfile,$result)) echo '  ✔ patch affichage hostname ok!';