README

Iranian Mellat Bank Gateway for PHP Projects

Installation

composer require navid045/mellatbank

Lifecycle

The process of an online payment with Mellat bank gateway consists of following steps:

• Request for a new payment

• Redirect user to the bank gateway page

• Verify payment on callback page

Getting Started

To use the package for your payments you must instantiate the Gateway class and provide its configuration.

use MellatBank\Gateway;

$config = [
    'terminalId' => '...',
    'userName' => '...',
    'userPassword' => '...',
    'callBackUrl' => 'https://example.com/payment/callback',
];

$gateway = new Gateway($config);

Request Payment

As mentioned above, a the first step you must request for a new payment. It can be done this way:

$refId = $gateway->requestPayment($amountInRial, 'Some optional description...');

This method would throws GatewayException if it could not call the bank server api, MellatExceptionif the bank response is something other than 0 (success).

MellatException holds the bank response in its message.

If there was no error it would returns the RefId.

Redirect to Gateway

Now that you have gotten the RefId you can lead user to the bank gateway.

To do this you should display an html form like this:

<form action="$bankGatewayUrl" method="post">
    <input type="hidden" name="RefId" value="$refId">
    <input type="submit" value="Pay">
</form>

The $bankGatewayUrl is an url that bank provides for you but you can get it from a Gateway instance this way:

$gateway->url()

Verify Payment

User completes the payment in bank gateway then bank redirects him to the callback you have provided in the configuration, it also sends some parameters to the callback with POST method.

Your callback url must verify the payment.

use MellatBank\Gateway;

$gateway = new Gateway($config);

$refId = $gateway->checkPayment();

if($refId != false) {
    $bankResult = $gateway->verifyPayment();
}

checkPayment() method would return $refId or false if there were any error.

verifyPayment() method would return the bank response as an instance of BankResult class, it throws InvalidResponseException if the request is not valid (might not from the bank), GatewayException if it cannot call the bank server api, MellatException if the bank response is something other than 0 (success).

Exceptions

• GatewayException: It'd be thrown when there were a problem on calling bank server APIs.
• MellatException: It'd be thrown when bank ResCode is not 0 (success). It holds the real response in its message.
• InvalidResponseException: It'd be thrown in verification level (callback url) when the parameters are not valid. This problem usually occurs when someone/something other than bank calls your callback url.

License

MellatBank is created by Milad Rahimi and changed by Navid Hosseini and released under the MIT License.