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sandeepshetty/gist:1838803

Created February 15, 2012 20:32
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Verify Shopify webhook in PHP
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gistfile1.aw
<?php
define('SHOPIFY_APP_SECRET', 'my_shared_secret');
function verify_webhook($data, $hmac_header)
{
$calculated_hmac = base64_encode(hash_hmac('sha256', $data, SHOPIFY_APP_SECRET, true));
return ($hmac_header == $calculated_hmac);
}
$hmac_header = $_SERVER['HTTP_X_SHOPIFY_HMAC_SHA256'];
$data = file_get_contents('php://input');
$verified = verify_webhook($data, $hmac_header);
error_log('Webhook verified: '.var_export($verified, true)); //check error.log to see the result
?>
@ravi7194
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Notice: Undefined index: HTTP_X_SHOPIFY_HMAC_SHA256 in E:\wamp\www\vs_dev.sareeo.clothing\seller\paypal\hook.php on line 18

Warning: hash_equals(): Expected known_string to be a string, null given in E:\wamp\www\vs_dev.sareeo.clothing\seller\paypal\hook.php on line 14

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