require_once $include_path . "/lib/captcha.class.php";
if (USE_CAPTCHA) {
if (isset($_GET['id']) && !empty($_GET['id'])) {
$_GET['id'] = trim($_GET['id']);
$id = addslashes($_GET['id']);
$expired = time() - 1200;
$db = new gbook_sql();
$db->connect();
$db->query("DELETE FROM {$GB_TBL["cap"]} WHERE timestamp < {$expired}");
$res = $db->query("SELECT * FROM {$GB_TBL["cap"]} WHERE session_id='{$id}' LIMIT 1");
$result = $db->fetch_array($res);
if (isset($result['validate_key'])) {
$imageType = "";
if (extension_loaded("gd")) {
$img = new SimpleCaptcha();
$img->setFontSizeRange(14, 18);
reset($img->supportedImagesTypes);
$imageType = key($img->supportedImagesTypes);
$img->setText($result['validate_key']);
} else {
require_once $include_path . "/lib/bitmapimagetext.class.php";
$img = new BitmapImageText();
$img->setText(strtoupper($result['validate_key']));
}
$img->setBackgroundColors(array("EEEEEE", "F2F3D3", "F5EAEA", "E4F3EE", "EEE4F3", "FFE6E6"));
$img->setTextColors(array("000000", "FD130A", "0A1BFD", "149703", "486C66", "870DC3", "D78406", "105243"));
if (!empty($imageType)) {
$img->getImage($imageType);
} else {
$img->getImage();
}