$o = '<h3>Probe Diagnostic</h3>';
$o .= '<form action="probe" method="get">';
- $o .= 'Lookup address: <input type="text" style="width: 250px;" name="addr" value="' . $_GET['addr'] . '" />';
+ $o .= 'Lookup address: <input type="text" style="width: 250px;" name="addr" value="' . defaults($_GET, 'addr', '') . '" />';
$o .= '<input type="submit" name="submit" value="Submit" /></form>';
$o .= '<br /><br />';
- if (x($_GET, 'addr')) {
+ if (!empty($_GET['addr'])) {
$addr = trim($_GET['addr']);
$res = Probe::uri($addr, "", 0, false);
$o .= '<pre>';