Integration Guide

1. Signup on checkbook.io

2. Generate your keys under "API Key"

3. Add this snippet in your checkout form

    <form id="checkbook_io" method="POST">
              <input type="hidden" id="checkbook_var"
                data-key="PUBLISHABLE KEY"
                data-amount='10.00'
                data-name="JR Merchants"
                data-for="JR Merchants"
                data-description="Your item's description"
                data-user-email ='buyer_email_address@example.com'
                data-redirect-url ="http://test.jrmerchants.com/confirm.php" //This endpoint should host the code written below             
                data-firstName ='Buyer First Name'
                data-lastName ="Buyer Last Name"/>
              <script src="http://checkbook.io/static/api/checkbook.js" class="checkbook-button" id="checkbook_api_js">
              </script>
    </form>
   

4. Add this snippet in the callback URL

    <?php
    $url = "http://www.checkbook.io/api/charge";
    $token = "token returned from checkbook.io";      
    $amount = "10.00";
    $currency = "USD";
    $description = "Your item's description";
   
    $options = array(
      'http'=>array(
        'method'=>"POST",
        'header'=>
          "Accept-language: en\r\n".
          "Content-type: application/x-www-form-urlencoded\r\n",
        'content'=>http_build_query(
            array(            
                'key'=>'SECRET KEY',
                'token'=> $token,
                'amount' => $amount,
                'currency' => $currency,
                'description' => $description
                
            ),'','&'
        )
    ));
   
    $context = stream_context_create($options);
    $refno = file_get_contents($url,false,$context);
    $pos = strpos($refno, "SUCCESS");
    ?>