Resends a Shopify order to a webhook target

resend-order-webhook.php

<?php
define('API_KEY', 'YOUR API KEY HERE');
define('SECRET', 'YOUR SECRET HERE');
define('STORE_DOMAIN', 'YOUR STORE DOMAIN HERE');

define('WEBHOOK_TARGET', 'your webhook URL here');

ini_set('display_errors', 'On');
ini_set('html_errors', 'Off');
error_reporting(-1);

if (count($argv) !== 2) {
    usage();
    exit;
}

$orderId = filter_var($argv[1], FILTER_VALIDATE_INT);

if (!$orderId) {
    usage();
    exit;
}

$orderUrl = 'https://'.API_KEY.':'.SECRET.'@'.STORE_DOMAIN."/admin/orders/$orderId.json";
$orderJson = file_get_contents($orderUrl);

if ($orderJson === FALSE) {
    die("Failed to retrieve JSON of order $orderId.\n");
}

$response = json_decode($orderJson);
$innerJson = json_encode($response->order);
$response = post($innerJson, WEBHOOK_TARGET);
echo "HTTP response from webhook target follows:\n$response";

function usage()
{
    global $argv;
    echo "Usage: {$argv[0]} <Shopify order ID>\n";
}

/**
 * Lifted from http://wezfurlong.org/blog/2006/nov/http-post-from-php-without-curl/
 */
function post($body, $url)
{
    $options = array('http' => array(
        'method' => 'POST',
        'content' => $body,
        'header' => "X-Shopify-Shop-Domain: ".STORE_DOMAIN,
        )
    );

    $ctx = stream_context_create($options);

    $fp = fopen($url, 'rb', FALSE, $ctx);

    if (!$fp) {
        throw new Exception("Could not open $url with fopen()");
    }

    $response = stream_get_contents($fp);

    if ($response === FALSE) {
        throw new Exception("Could not read data from $url: $php_errormsg");
    }

    return $response;
}
?>