dedecms织梦手机站去除文章内容中图片的宽高达到自适应

{dede:field.body/}

{dede:field.body runphp=yes}
global $cfg_basehost;
$str = @me;
$search = '/(<img.*?)width=(["\'])?.*?(?(2)\2|\s)([^>]+>)/is';
$search1 = '/(<img.*?)height=(["\'])?.*?(?(2)\2|\s)([^>]+>)/is';
$search2 = '#(<img.*?style=".*?)width: \d+px;([^"]*?.*?>)#i';
$search3 = '#(<img.*?style=".*?)height: \d+px;([^"]*?.*?>)#i';
$content = preg_replace($search,'$1$3',$str);
$content = preg_replace($search1,'$1$3',$content);
$content = preg_replace($search2,'$1$2',$content);
$content = preg_replace($search3,'$1$2',$content);
@me = str_replace('/uploads/allimg/', $cfg_basehost.'/uploads/allimg/', $content);//手机版图片使用绝对路径
{/dede:field.body}