$content = "<p>1.<span style=\"font-family:宋体\">普通照明灯及开关插座的接线图</span></p><p><img title=\"1.jpg\" src=\"/resources/ueditor_img/upload/20130306/13625490469758.jpg\" /></p>";
/*利用正则表达式得到图片链接*/
$pattern="/\<img.*?src\=\"(.*?)\"[^>]*>/i";
$num = preg_match_all($pattern, $content, $match_src);
$arr_src=$match_src[1];//获得图片数组
/*利用正则表达式得到图片链接*/
$pattern="/\<img.*?src\=\"(.*?)\"[^>]*>/i";
$num = preg_match_all($pattern, $content, $match_src);
$arr_src=$match_src[1];//获得图片数组