function set_default_image(){ global $post; $image = str_img_src($post->post_content); if($image != ""){ echo '' . "\n"; } } add_action('wp_head', 'set_default_image'); function str_img_src($html) { if (strpos($html, ' var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-7870337-1']); _gaq.push(['_setDomainName', 'none']); _gaq.push(['_setAllowLinker', true]); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })();