paytabs request body

array(
            //Customer's Personal Information

            'cc_first_name'     => $user['User']['name'],          //This will be prefilled as Credit Card First Name
            'cc_last_name'      => $user['User']['name'],            //This will be prefilled as Credit Card Last Name
            'cc_phone_number'   => '00966',
            'phone_number'      => $user['User']['mobile_number'], // Classera phone number
            'email'             => $user['User']['email'],

            //Customer's Billing Address (All fields are mandatory)
            //When the country is selected as USA or CANADA, the state field should contain a String of 2 characters containing the ISO state code otherwise the payments may be rejected.
            //For other countries, the state can be a string of up to 32 characters.
            'billing_address' => "riyadh SAU",
            'city' => "riyadh",
            'state' => "riyadh",
            'postal_code' => "00966",
            'country' => "SAU",

            //Customer's Shipping Address (All fields are mandatory)
            'address_shipping' => "Riyadh SAU",
            'city_shipping' => "riyadh",
            'state_shipping' => "riyadh",
            'postal_code_shipping' => "00966",
            'country_shipping' => "SAU",

           //Product Information
            "products_per_title" => "Enroll course",   //Product title of the product. If multiple products then add “||” separator
            'quantity' => "1",                                    //Quantity of products. If multiple products then add “||” separator
            'unit_price' => $amount,                                  //Unit price of the product. If multiple products then add “||” separator.
            "other_charges" => "0.00",                                     //Additional charges. e.g.: shipping charges, taxes, VAT, etc.

            'amount' => $amount,                                          //Amount of the products and other charges, it should be equal to: amount = (sum of all products’ (unit_price * quantity)) + other_charges
            'discount'=> '0.0',                                                //Discount of the transaction. The Total amount of the invoice will be= amount - discount
            'currency' => 'SAR',                                            //Currency of the amount stated. 3 character ISO currency code



            //Invoice Information
            'title' => $user['User']['name'],               // Customer's Name on the invoice
            "msg_lang" => "en",                 //Language of the PayPage to be created. Invalid or blank entries will default to English.(Englsh/Arabic)
            "reference_no" => "1231231",        //Invoice reference number in your system


            //Website Information
            "site_url" => "http://svaapi.classera.com",      //The requesting website be exactly the same as the website/URL associated with your PayTabs Merchant Account
            'return_url' => "http://svaapi.classera.com/Payments/verify_payment/lecture_id:$lecture_id/u_id:$user_id/program_id:$program_id/http_origin:$http_origin/?access_token=a3d8c21b54c8ad8e4cc0d7d066b476c2ce9da709",
            "cms_with_version" => "API USING PHP",

            "paypage_info" => "1"
        );