Merhaba arkadaşlar her şey tamam ama bildirim kısmında çözemediğim kısımlar var. Kod aşağıdaki gibi showBildirim kısmında post veri gelmiyor.

public function showPayment(){
    $paytr=Payment::find(1);
    $config=Config::find(1);
    $whatsapp=Whatsapp::find(1);
    $headerfooters=HeaderFooters::find(1);
    
    $data = request()->all();
    
    $merchant_id    = $paytr->paymentsid;
    $merchant_key   = $paytr->paymentskey;
    $merchant_salt  = $paytr->paymentssalt;

    $urunid  = session('urunid');
    $adsoyad = session('adsoyad');
    $mail = session('mail');
    $telefon = session('telefon');
    $urunfiyat = session('urunfiyat');

    $random_id = "11".rand(1,999).rand(1,88)*rand(1,50);
    $email = $mail;
    $payment_amount =intval($urunfiyat * 100); //9.99 için 9.99 * 100 = 999 gönderilmelidir.
    $merchant_oid = $random_id;
    $user_name = $adsoyad;
    $user_address = "xxxxxxx";
    $user_phone = $telefon;
    $merchant_ok_url = "https://siteadresi.net/payments/paytr/onay";
    $merchant_fail_url = "https://siteadresi net/payments/paytr/hata";
    $user_basket = '1';


    $siparisler=new Siparisler;
    $siparisler->urunid=session('urunid');
    $siparisler->adsoyad=$adsoyad;
    $siparisler->mailadres=$mail;
    $siparisler->telno=$telefon;
    $siparisler->siparisfiyat=$urunfiyat;
    $siparisler->paytrid=$random_id;
    $siparisler->durum=0;
    $siparisler->save();

    if( isset( $_SERVER["HTTP_CLIENT_IP"] ) ) {
        $ip = $_SERVER["HTTP_CLIENT_IP"];
    } elseif( isset( $_SERVER["HTTP_X_FORWARDED_FOR"] ) ) {
        $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
    } else {
        $ip = $_SERVER["REMOTE_ADDR"];
    }

    $user_ip=$ip;
    $timeout_limit = "5";
    $debug_on = 1;
    $test_mode = 1;

    $no_installment = 1;
    $max_installment = 0;

    $currency = "TL";

    $hash_str = $merchant_id .$user_ip .$merchant_oid .$email .$payment_amount .$user_basket.$no_installment.$max_installment.$currency.$test_mode;
    $paytr_token=base64_encode(hash_hmac('sha256',$hash_str.$merchant_salt,$merchant_key,true));
    $data_vals=array(
        'merchant_id'=>$merchant_id,
        'user_ip'=>$user_ip,
        'merchant_oid'=>$merchant_oid,
        'email'=>$email,
        'payment_amount'=>$payment_amount,
        'paytr_token'=>$paytr_token,
        'user_basket'=>$user_basket,
        'debug_on'=>$debug_on,
        'no_installment'=>$no_installment,
        'max_installment'=>$max_installment,
        'user_name'=>$user_name,
        'user_address'=>$user_address,
        'user_phone'=>$user_phone,
        'merchant_ok_url'=>$merchant_ok_url,
        'merchant_fail_url'=>$merchant_fail_url,
        'timeout_limit'=>$timeout_limit,
        'currency'=>$currency,
        'test_mode'=>$test_mode
    );

    $ch=curl_init();
    curl_setopt($ch, CURLOPT_URL, "https://www.paytr.com/odeme/api/get-token");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1) ;
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_vals);
    curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 20);



    $result = @curl_exec($ch);

    if(curl_errno($ch))
        die("PAYTR IFRAME connection error. err:".curl_error($ch));

    curl_close($ch);

    $result=json_decode($result,1);

    if($result['status']=='success')
        $token=$result['token'];
    else
        die("PAYTR IFRAME failed. reason:".$result['reason']);

         return view("payments/paytr/callback",compact("token", 'config','whatsapp','headerfooters'));


}



public function showBildirim(){
    
    $data =request()->all();

    $paytr=Payment::find(1);
    $config=Config::find(1);
    $whatsapp=Whatsapp::find(1);
    $headerfooters=HeaderFooters::find(1);
    $post =$_POST;
    $merchant_key     = $paytr->paymentskey;
    $merchant_salt    = $paytr->paymentssalt;
    
   $hash = base64_encode( hash_hmac('sha256', $post['merchant_oid'].$merchant_salt.$post['status'].$post['total_amount'], $merchant_key, true) );

    if( $hash != $post['hash'] )
        die('PAYTR notification failed: bad hash');

    if( $post['status'] == 'success' ) {
        $urunid = session('urunid');
        $siparisler=Siparisler::findOrFail($urunid);
        $siparisler->durum=1;
        $siparisler->save();

        return view("payments/paytr/onay",compact('config','whatsapp','headerfooters'));

    } else { ## Ödemeye Onay Verilmedi

        $urunid = session('urunid');
        $siparisler=Siparisler::findOrFail($urunid);
        $siparisler->durum=2;
        $siparisler->save();

        $hatamesaj = $post['failed_reason_msg'];
        return view("payments/paytr/hata",compact('config','whatsapp','headerfooters','hatamesaj'));
        ## $post['failed_reason_code'] - başarısız hata kodu
        ## $post['failed_reason_msg'] - başarısız hata mesajı
    }
}