VnpayClass.php

<?php
error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
date_default_timezone_set('Asia/Ho_Chi_Minh');

class payment 
{
    function vnpay_payment ($invoice_no,$product_total_price){
        $vnp_Url = "https://sandbox.vnpayment.vn/paymentv2/vpcpay.html";
        $vnp_Returnurl =  "http://localhost/shopbongda/success_vnpay.php";
        $vnp_TmnCode = "FSMWMOJ6";
        $vnp_HashSecret = "JVNCZLMKFMVYROGNBZKOAORLOOYXSODH"; 
        $vnp_TxnRef = $invoice_no;
        $vnp_OrderInfo = $invoice_no;
        $vnp_OrderType = 'billpayment';
        $vnp_Amount = $product_total_price * 100;
        $vnp_Locale = 'vn';
        $vnp_BankCode = '';
        $vnp_IpAddr = $_SERVER['REMOTE_ADDR'];
        $inputData = array(
            "vnp_Version" => "2.1.0",
            "vnp_TmnCode" => $vnp_TmnCode,
            "vnp_Amount" => $vnp_Amount,
            "vnp_Command" => "pay",
            "vnp_CreateDate" => date('YmdHis'),
            "vnp_CurrCode" => "VND",
            "vnp_IpAddr" => $vnp_IpAddr,
            "vnp_Locale" => $vnp_Locale,
            "vnp_OrderInfo" => $vnp_OrderInfo,
            "vnp_OrderType" => $vnp_OrderType,
            "vnp_ReturnUrl" => $vnp_Returnurl,
            "vnp_TxnRef" => $vnp_TxnRef,
        );
    
        if (isset($vnp_BankCode) && $vnp_BankCode != "") {
            $inputData['vnp_BankCode'] = $vnp_BankCode;
        }
        if (isset($vnp_Bill_State) && $vnp_Bill_State != "") {
            $inputData['vnp_Bill_State'] = $vnp_Bill_State;
        }
    
        ksort($inputData);
        $query = "";
        $i = 0;
        $hashdata = "";
        foreach ($inputData as $key => $value) {
            if ($i == 1) {
                $hashdata .= '&' . urlencode($key) . "=" . urlencode($value);
            } else {
                $hashdata .= urlencode($key) . "=" . urlencode($value);
                $i = 1;
            }
            $query .= urlencode($key) . "=" . urlencode($value) . '&';
        }
    
        $vnp_Url = $vnp_Url . "?" . $query;
        if (isset($vnp_HashSecret)) {
            $vnpSecureHash =   hash_hmac('sha512', $hashdata, $vnp_HashSecret);//  
            $vnp_Url .= 'vnp_SecureHash=' . $vnpSecureHash;
        }
        $returnData = array('code' => '00'
            , 'message' => 'success'
            , 'data' => $vnp_Url);
            if (isset($_POST['redirect'])) {
                header('Location: ' . $vnp_Url);
                die();
            } else {
                echo json_encode($returnData);
            }
    }
}