php去除html代码中img图片标签宽高函数

function content_strip($content){
	$content = preg_replace('/<img[^>]*src=[\'"]?([^>\'"\s]*)[\'"]?[^>]*>/ie',"wap_img('$1')",$content);
	return $content;
}
function wap_img($url){
	$img='<img src="'.$url.'">';
	return $img;
}