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：