<?php  /*PHP正則提取圖片img標記中的任意屬性*/ $str = '<center><img src="/uploads/images/20100516000.jpg" height="120" width="120"><br />PHP正則提取或更改圖片img標記中的任意屬性</center>';  //1、取整個圖片代碼 preg_match('/</s*img/s+[^>]*?src/s*=/s*(/'|/")(.*?)//1[^>]*?//?/s*>/i',$str,$match); echo $match[0];  //2、取width preg_match('/<img.+(width=/"?/d*/"?).+>/i',$str,$match); echo $match[1];  //3、取height preg_match('/<img.+(height=/"?/d*/"?).+>/i',$str,$match); echo $match[1];  //4、取src preg_match('/<img.+src=/"?(.+/.(jpg|gif|bmp|bnp|png))/"?.+>/i',$str,$match); echo $match[1];  /*PHP正則替換圖片img標記中的任意屬性*/ //1、將src="/uploads/images/20100516000.jpg"替換為src="/uploads/uc/images/20100516000.jpg") print preg_replace('/(<img.+src=/"?.+)(images//)(.+/.(jpg|gif|bmp|bnp|png)/"?.+>)/i',"/${1}uc/images//${3}",$str); echo "<hr/>";  //2、將src="/uploads/images/20100516000.jpg"替換為src="/uploads/uc/images/20100516000.jpg",并省去寬和高 print preg_replace('/(<img).+(src=/"?.+)images//(.+/.(jpg|gif|bmp|bnp|png)/"?).+>/i',"/${1} /${2}uc/images//${3}>",$str);  ?>

/正則表達式<script language="javascript">var a='<P><IMG src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg" mce_src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg"></P>'var b=/<IMG src=/"([^/"]*?)/">/givar s=a.match(b)for(var i= 0;i<s.length;i++){alert(s[i]);alert(RegExp.$1)}</script>

<script language="javascript">var a='<P><IMG src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg" mce_src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg"></P>'var b=/<IMG src=/"([^/"]*?)/">/givar s=a.match(b)for(var i= 0;i<s.length;i++){alert(s[i]);alert(s[i].replace(b,"$1"))}</script>