rates.php

<?php
// log the raw request -- this makes debugging much easier
$filename = time();
$input = file_get_contents('php://input');
file_put_contents($filename.'-input', $input);

// parse the request
$rates = json_decode($input, true);

// log the array format for easier interpreting
file_put_contents($filename.'-debug', print_r($rates, true));

// total up the cart quantities for simple rate calculations
$quantity = 0;
foreach($rates['rate']['items'] as $item) {
    $quantity =+ $item['quantity'];
}

// use number_format because shopify api expects the price to be "25.00" instead of just "25"

// overnight shipping is 5.50 per item
//$overnight_cost = number_format($quantity * 5.50, 2, '', '');
// regular shipping is 2.75 per item
$regular_cost = number_format($quantity * 75.00, 2, '', '');

// overnight shipping is 1 to 2 days after today
//$on_min_date = date('Y-m-d H:i:s O', strtotime('+1 day'));
//$on_max_date = date('Y-m-d H:i:s O', strtotime('+2 days'));

// regular shipping is 3 to 7 days after today
$reg_min_date = date('Y-m-d H:i:s O', strtotime('+3 days'));
$reg_max_date = date('Y-m-d H:i:s O', strtotime('+7 days'));

// build the array of line items using the prior values
$output = array('rates' => array(
 /*
    array(
        'service_name' => 'Pargo Shipping',
        'service_code' => 'PUP',
        'total_price' => $regular_cost,
        'currency' => 'ZAR',
        'min_delivery_date' => $reg_min_date,
        'max_delivery_date' => $reg_max_date
    ),
 */   
    array(
        'service_name' => 'Pargo Pick Up Points',
        'service_code' => 'PUP',
        'total_price' => $regular_cost,
        'currency' => 'ZAR',
        'min_delivery_date' => $reg_min_date,
        'max_delivery_date' => $reg_max_date
    )
));

// encode into a json response
$json_output = json_encode($output);

// log it so we can debug the response
file_put_contents($filename.'-output', $json_output);

// send it back to shopify
print $json_output;

?>