Payment Gateway integration with Razorpay in php.
 

1. Config API

config.php

<?php
    $keyId = 'YOUR_KRY_FILE';
    $keySecret = 'YOUR_SECRET_KEY';
    $displayCurrency = 'INR';
    error_reporting(E_ALL);
    ini_set('display_errors', 1);
?>

2.Place Order

order.php

   <?php require('config.php');
    require('razorpay-php/Razorpay.php');

    use Razorpay\Api\Api;
    $api = new Api($keyId, $keySecret);

    $Gpass='1234567'; // Unique ID
    $invoice_payment_amount=200;
    $user_name="Customer Name";
    $description ="Your order details";
    $username_mail ="Email Id";
    $contact_no_1 ="910000008";
    $pay_id='8595844'; // Unique order ID for update database

    $orderData = [
        'receipt'         => $Gpass,
        'amount'          => $invoice_payment_amount * 100, // 2000 rupees in paise
        'currency'        => 'INR',
        'payment_capture' => 1 // auto capture
    ];

    $razorpayOrder = $api->order->create($orderData);

    $razorpayOrderId = $razorpayOrder['id'];

    $_SESSION['razorpay_order_id'] = $razorpayOrderId;

    $displayAmount = $amount = $orderData['amount'];

    if ($displayCurrency !== 'INR')
    {
        $url = "https://api.fixer.io/latest?symbols=$displayCurrency&base=INR";
        $exchange = json_decode(file_get_contents($url), true);

        $displayAmount = $exchange['rates'][$displayCurrency] * $amount / 100;
    }


    $data = [
        "key"               => $keyId,
        "amount"            => $amount,
        "name"              => $user_name,
        "description"       => $description,
        "image"             => "YOUR_LOGO_URL",
        "prefill"           => [
        "name"              => $user_name,
        "email"             => $username_mail,
        "contact"           => $contact_no_1,
        "shopping_order_id" => $pay_id,
        "Invoice"           => $Gpass
        ],
        "notes"             => [
        "address"           => "NA",
        "merchant_order_id" => $pay_id,
        ],
        "theme"             => [
        "color"             => "#F37254"
        ],
        "order_id"          => $razorpayOrderId,
    ];

    if ($displayCurrency !== 'INR')
    {
        $data['display_currency']  = $displayCurrency;
        $data['display_amount']    = $displayAmount;
    }

    $json = json_encode($data);
?>

    Payment modes, secure gateway,Accept Cards, Netbanking, Wallets, EMI & UPI. 
   
       
          <script
            src="https://checkout.razorpay.com/v1/checkout.js"
            data-key=""
            data-amount=""
            data-currency="INR"
            data-name=""
            data-image=""
            data-description=""
            data-prefill.name=""
            data-prefill.email=""
            data-prefill.contact=""
            data-notes.shopping_order_id=""
            data-order_id=""
          >
          
          
          
        
    

Note: Use notes for extra details

$data = [
    "key"               => $keyId,
    "amount"            => $amount,
    "name"              => $user_name,
    "description"       => $description,
    "image"             => "YOUR_LOGO_URL",
    "prefill"           => [
    "name"              => $user_name,
    "email"             => $username_mail,
    "contact"           => $contact_no_1,
    "shopping_order_id" => $pay_id,
    "Invoice"           => $Gpass
    ],
    "notes"             => [
    "address"           => "NA",
    "merchant_order_id" => $pay_id,
    ],
    "theme"             => [
    "color"             => "#F37254"
    ],
    "order_id"          => $razorpayOrderId,
];

Example.

"notes"=> [
    "address"           => "NA",
    "merchant_order_id" => $pay_id,
    "details_1" => $details_1,
    "details_2" => $details_2,
    "details_3" => $details_3,
    "details_more" => $details_more,
    ]

3. Varify and update payment information

varify.php

    <?php require('config.php');
    require('razorpay-php/Razorpay.php');
    use Razorpay\Api\Api;
    use Razorpay\Api\Errors\SignatureVerificationError;
    $success = true;
    $error = "Payment Failed";
    if (empty($_POST['razorpay_payment_id']) === false)
    {
        $api = new Api($keyId, $keySecret);
        try
        {
            // Please note that the razorpay order ID must
            // come from a trusted source (session here, but
            // could be database or something else)
            $attributes = array(
                'razorpay_order_id' => $_SESSION['razorpay_order_id'],
                'razorpay_payment_id' => $_POST['razorpay_payment_id'],
                'razorpay_signature' => $_POST['razorpay_signature'],
                'shopping_order_id' => $_POST['shopping_order_id']
            );

            $api->utility->verifyPaymentSignature($attributes);
        }
        catch(SignatureVerificationError $e)
        {
            $success = false;
            $error = 'Razorpay Error : ' . $e->getMessage();
        }
    }

    if ($success === true)
    {
        $date_of_regis=time();
        $payment_end_ts=date('h:i:s');
        $pay_id=$_POST['shopping_order_id'];
        
        $length = 8;
        $characters = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXY".time();
        $Gpass = "";    

        for ($p = 0; $p < $length; $p++)
        {
            $Gpass.= $characters[rand(0, strlen($characters))];
        }

        $Invoice='INV-'.$Gpass;
        $description='Paid for Buy';
        $rid=$_POST['razorpay_payment_id'];
        $payment_day=date('d');
        $payment_month=date('m');
        $payment_year=date('Y');
        $ttmp=time();    
        $sql=mysqli_query($connection,"update order set is_paid=1,invoice_no='$Invoice' where id=$pay_id");
       
    }
    else
    {
        $html = "Your payment failed{$error}";
         header('Location:index.php?pay=failed');         
    }

?>