<?
include_once("_common.php");
header("Content-Type: text/html; charset=$g4[charset]");
require(dirname(__FILE__).'/kcaptcha_config.php');
include('kcaptcha.php');

/*
session_start();
$_SESSION['captcha_keystring'] = (string)mt_rand(10000,999999);
$captcha = new KCAPTCHA();
$captcha->setKeyString($_SESSION['captcha_keystring']);
if($_REQUEST[session_name()]){ $_SESSION['captcha_keystring'] = $captcha->getKeyString(); }
echo $captcha->getKeyString();
*/
while(true){
    $keystring='';
    for($i=0;$i<$length;$i++){
        $keystring.=$allowed_symbols{mt_rand(0,strlen($allowed_symbols)-1)};
    }
    if(!preg_match('/cp|cb|ck|c6|c9|rn|rm|mm|co|do|cl|db|qp|qb|dp|ww/', $keystring)) break;
}

//session_start();
set_session("captcha_keystring", $keystring);
$captcha = new KCAPTCHA();
$captcha->setKeyString(get_session("captcha_keystring"));
echo md5($captcha->getKeyString());
?>
