David Walsh Blog

Send Email Notifications for Broken Images Using MooTools AJAX

One of the little known JavaScript events is the image onError event. This event is triggered when an image 404’s out because it doesn’t exist. Broken images can make your website look unprofessional and it’s important to fix broken images as soon as possible. I’ve created a MooTools / PHP script that listens for image errors, triggers an AJAX call to a PHP script, and that PHP script sends an email letting me know about the problem.

The MooTools JavaScript


window.addEvent('domready',function() {
	$$('img').addEvent('error',function() {
		var notification = new Request({
			url: 'ajax-image-error.php',
			method: 'post',
			data: {
				'image': this.get('src'),
				'page': window.location.href
			}
		}).send();
	});
});

You’ll notice that I listen for the error event. You’ll also notice that I only send two parameters: the image path and the page the broken image is living (or dying) on.

The PHP


if(isset($_POST['image']))
{
	$to = 'errors@yourdomain.com';
	$from = 'automailer@yourdomain.com';
	$subject = 'Broken Image';
	$content = "The website is signaling a broken image!\n\nBroken Image Path:  ".stripslashes($_POST['image'])."\n\nReferenced on Page:  ".stripslashes($_POST['page']);
	$result = mail($to,$subject,$content,'From: '.$from."\r\n");
	die($result);
}

Nothing special within the email — just the parameters we put into the AJAX call. This bare email will provide us enough information to solve the problem.

One addition to the MooTools script could be to remove the image from the page so that the user doesn’t notice the problem. Have any suggestions? Share them!