代码如下：

$body = '<img    src="/static/upload/image/20200623/1592908795436801.jpg" title="1592908795436801.jpg" alt="5fec642a1bc5ec3b52e91572235abaf1.jpg"/>dasdasda大叔大婶</p><p>等祭扫大量萨顶顶了</p><p>的马萨拉蒂马来</p><p>萨达<img    src="/static/upload/image/20200623/1592908814436201.jpg" title="1592908814436201.jpg" alt="2bb17d0f2a268cd844ca1ff3081492c2.jpg"/></p>';$pattern='/<img.*?src="(.*?)".*?>/is';				
$r = preg_match($pattern,$body,$matchContent);if($r){$litpic= $matchContent[1];
}else{
$litpic = '';
}
echo $litpic;