$preg = ‘/(src)=([\"|\‘]?)([^ \"\‘>]+\.(gif|jpg|jpeg|bmp|png))\\2/i‘;
preg_match_all($preg, $data[‘content‘], $pics);
foreach ($pics[3] as $v){
echo $v."<br>";
}
从内容中提取图片
原文：https://www.cnblogs.com/lezuw/p/12059731.html
