Dynamic link

<?php
//I assemble the products of my order
//Store Product ID
$products[0]['id'] = 01;
//Product quantity
$products[0]['quantity'] = 2;
//Product price
$products[0]['price'] = 5.00;
//Value without TAX of the product
$products[0]['subtotal'] = 10.00;
// Product tax
$products[0]['tax'] = 1.20;
//Total product value
$products[0]['total'] = 11.20;

//I assemble the customer data
//Customer name (Optional)
$customer['name'] = 'Pedro Andres';
//Customer Last Name (Optional)
$customer['last_name'] = 'Ramirez Cando';
//Customer Identity Document (Optional)
$customer['document'] = '1785698847';
//Customer email (Optional)
$customer['email'] = '[email protected]';
//Customer phone (Optional)
$customer['phone'] = '0984571241';
//Customer address (Optional)
$customer['address'] = 'Av. Amazonas y Patria';
//Transaction Reason / Additional Notes (Optional)
$customer['aditional_data'] = 'Venta de Suministro';

//I assemble the array to send
$datos = array(
        'products' => json_encode($products),
        'customer' => json_encode($customer) // (Optional) Send only if you want to send customer data,
        'url_response' => 'https://url_response.com', // (Optional)  Type: POST
        'description' => 'Descripción de link' // (Optional)
);

//Address to Payment link
$url = 'https://portal.botonpagos.com/api/datafast/linksApi';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'code: ID del comercio'//ID provided by ButtonPagos
));
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $datos);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$responseData = curl_exec($ch);
//If there is a connection error
if (curl_error($ch)) {
    echo curl_error($ch);
}
curl_close($ch);
//Step to array the data obtained in Json
$responseData = json_decode($responseData, true);
?>