php判断404：
$url = home_url()./wp-content/themes/twentythirteen/pic/.$result['pic']; $headers = @get_headers($url); if(strpos($headers[0],'404') ) { $url=home_url()./wp-content/themes/twentythirteen/pic/default.png; }
js判断404：
var pic_url =/wp-content/themes/twentythirteen/pic/+data[i].pic; $.ajax({ url:pic_url, error:function(xhr, error, ex){ if (xhr.status == '404') { pic_url = /wp-content/themes/twentythirteen/pic/default.png; } }, success:function(){ pic_url = pic_url; } });
js判断404,要通过ajax......
以上就介绍了php 404判断 与 js 404判断，包括了方面的内容。