$str = ‘<div align="center"> <img src="http://www.99tyg.com/public/images/e8/67/26/fc699f23244f7ca7cd360092f6ba5d641d61fe88.jpg?1476757957#h"></div>‘; preg_match_all(‘/<img.*?src="(.*?)".*?>/is‘,$str,$array); print_r($array);
原文：http://www.cnblogs.com/blts/p/6026901.html