'; } function wp_auto_amazon($content) { // update boxes $content = preg_replace_callback('/]*?)href="http:\/\/(www.)?amazon.com\/(exec\/obidos\/ASIN|gp\/product|[A-Za-z0-9-]+\/dp)\/([A-Za-z0-9]+)\/([^"]*)"([^>]*?)>/', 'wp_auto_amazon_callback', $content); return $content; } add_filter('the_content', 'wp_auto_amazon'); ?>