BlackPay Express Hookup

cart.php

<?php
# Generate a sample the payload structure
$payload = array(
    'store_id'      =>  '10',
    'cart_id'       =>  '#234-14-222-KY', # May be an invoice number
    'cart_items'    =>  array(
        array(
		'id'	=>	'SKU-123-145',
		'name'	=>	'Sony Playstation 2',
		'qty'	=>	1,
		'price'	=>	12000
	),
	array(
		'id'	=>	'SKU-123-456',
		'name'	=>	'Plastic Chair',
		'qty'	=>	2,
		'price'	=>	500
	),    
    ),
    'grand_total'   =>  800,
    'success_url'   =>  'https://www.example.com/transaction/success',
    'cancel_url'    =>  'https://www.example.com/transaction/cancelled',
    'failed_url'    =>  'https://www.example.com/transaction/failed',
    'logo'          =>  'https://www.example.com/assets/biz-logo.png',
    'customer_email'   =>  'nelson@blackay.co.ke',
    'customer_telephone'   =>  '+254700123456', # We will send the customer an SMS receipt if this field exists
);

# Encode payload for sending to BlackPay express
$payload = base64_encode(json_encode($payload));
?>

<!--Send your request with an normal POST payload-->
<form method="POST" action="[ENTER BLACKPAY EXPRESS ENDPOINT]">
    <input type="hidden" name="store_id" value="[ENTER STORE ID]">
    <input type="hidden" name="cart_id" value="[CART UNIQUE ID]">
    <input type="hidden" name="cart_items" value="<?php echo $cartItems?>"> <!-- $cartItems string here -->
    <input type="hidden" name="grand_total" value="[GRAND TOTAL]">
    <input type="hidden" name="success_url" value="[LINK TO REDIRECT ON SUCCESS]">
    <input type="hidden" name="failed_url" value="[LINK TO REDIRECT ON FAIL]">
    <input type="hidden" name="cancel_url" value="[LINK TO REDIRECT ON CANCEL]">
    <input type="hidden" name="customer_email" value="[CUSTOMER EMAIL]">
    <button type="submit" class="btn btn-success btn-lg btn-block">Pay with M-PESA</button>
</form>