正则：img的url,width,height 和 a标签的url以及替换

代码：
// 内容：$detail['content']

    //img的url,width,height

	$img = array();

	$matches = array();

	$regeImg      = '/<img.+src=\"?(.+(jpg|gif|bmp|bnp|png))\"?.+width=\"?(\d*)\"?.+height=\"?(\d*)\"?.+>/i';

	if(preg_match_all($regeImg, $detail['content'], $matches)){

		//$matches[1] url ;$matches[3] width ;$matches[4] height

		foreach($matches[1] as $k=>$v){

			$img[$k]['ref'] = "<!--IMG#".$k."-->";

			$img[$k]['src'] = $v;

			$img[$k]['alt'] = '';

			$img[$k]['width']  = $matches[3][$k];

			$img[$k]['height'] = $matches[4][$k];

		}

	}

	//a标签

	$link = array();

	$regA= '/<a.*href="(.*)".*>(.*)</isU';

	$aList = array();

	if(preg_match_all($regA, $detail['content'], $aList)){

		//$aList[1] url ;$aList[2] content

		foreach($aList[1] as $k=>$v){

			$link[$k]['ref']   = "<!--link".$k."-->".$aList[2][$k];

			$link[$k]['title'] = $aList[2][$k];

			$link[$k]['url']   = $v;

		}

	}

	 //替换img标签

	 $str = "";

	 $regReplaceImg = '/<img.+src=\"?(.+(jpg|gif|bmp|bnp|png))\"?.+width=\"?(\d*)\"?.+height=\"?(\d*)\"?.+?(?=\/)?(>)?/i';

	 foreach($img as $k=>$v){

		 if($k == 0){

			 $content = $detail['content'];

			 $str = $this->replace($regReplaceImg,"<!--IMG#".$k."-->",$content);

		 }else{

			 $str = $this->replace($regReplaceImg,"<!--IMG#".$k."-->",$str);

		 }

	 }

	//替换a标签

	$body = '';

	$regPeplaceA = '/<a.*href="(.*)".*>(.*)<\/a>/isU';

	foreach($link as $k=>$v){

		if($k == 0){

			$body = $this->replace($regPeplaceA,$v['ref'],$str);

		}else{

			$body = $this->replace($regPeplaceA,$v['ref'],$body);

		}

	}

	//替换

    public function replace($reg,$replace,$con){

        $str = preg_replace($reg,$replace, $con,1);

        return $str;

    }

打印出来的json数据：