User authentication issue.. Help..

[Mutlu]

Hi everyone.. 

I'm the new guy at this community and whmcs system. 

I'm started work with whmcs system short time ago and i have some problems. 

I think my problems not so complicated but i cant solve that and i need litle help.

I'm trying to do make user authentication with whmcs api everythink seems well but when i try to login form my software it's rejecting and creating {"result":"error","message":"Invalid password provided"} mesage.

 

How i can fix this issue? I need idea.. You can find my codes below.

if(isset($_POST['gonder'])) {
    $kullaniciAdi = $_POST["kulAdi"];
    $parola = $_POST["pass"];

    /**
     * WHMCS Sample API Call
     *
     * @package    WHMCS
     * @author     WHMCS Limited <development@whmcs.com>
     * @copyright  Copyright (c) WHMCS Limited 2005-2016
     * @license    http://www.whmcs.com/license/ WHMCS Eula
     * @version    $Id$
     * @link       http://www.whmcs.com/
     */

// API Connection Details
    $whmcsUrl = "http://***.***.***.***/whmcs/includes/api.php";

// For WHMCS 7.2 and later, we recommend using an API Authentication Credential pair.
// Learn more at http://docs.whmcs.com/API_Authentication_Credentials
// Prior to WHMCS 7.2, an admin username and md5 hash of the admin password may be used.
    $username = $kullaniciAdi;
    $password = $parola;

    $api_identifier = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
    $api_secret = 'xxxxxxxxxxxxxxxxxxxxxxxxxxx';
    $accessKey = 'xxxxxxxx';
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $whmcsUrl);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS,
        http_build_query(
            array(
                'action' => 'ValidateLogin',
                // See https://developers.whmcs.com/api/authentication
                'username' => $api_identifier,
                'password' => $api_secret,
                'accesskey' => $accessKey,
                'username' => $kullaniciAdi,
                'password2' => $parola,
                'responsetype' => 'json',
            )
        )
    );
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $response = curl_exec($ch);
    curl_close($ch);
    $sonuc = json_decode($response);

    if ($sonuc->{'result'} != "error"){
        echo "Girişiniz onaylandı ana menüye yönlendiriliyorsunuz";
    } else {
        echo $response."<br />";
        echo $sonuc->{'result'}."<br />";
        echo $sonuc->{'message'}."<br />";
    }

}