<?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]; （PS：T不錯的php Q扣峮：276167802，驗證：csl） 

/*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); 

?>