<?php $html = $eyou['field']['content_5']; //提取详情图片 $pattern = '/<img[^>]+>/i'; //使用preg_match_all函数来查找所有匹配的img标签 preg_match_all($pattern, $html, $matches); // 输出结果 //var_dump($matches[0]); $k = $pa - 1; echo $matches[0][$k]; ?>