php正则提取html图片(img)src地址与任意属性

简单版

  
        ![](http://www.smsyun.com/uploads/image/20140620/2014052010425.jpg)  
        
2014年  
      

'; $imgpreg = "//"; preg_match($imgpreg,$str,$img); $mycount=count($img)-1; $imgval = $iim[$mycount]; if(!empty($imgval)){ echo $imgval; }else{ echo 'no'; } ?>

详细版

![](/uploads/images/20100516000.jpg)
PHP正则提取或更改图片img标记中的任意属性';  
  
//1、取整个图片代码  
preg_match('/<\s*img\s+[^>]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i',$str,$match);  
echo $match[0];  
  
//2、取width  
preg_match('//i',$str,$match);  
echo $match[1];  
  
//3、取height  
preg_match('//i',$str,$match);  
echo $match[1];  
  
//4、取src  
preg_match('//i',$str,$match);  
echo $match[1];  
  
/*PHP正则替换图片img标记中的任意属性*/  
//1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg")  
print preg_replace('/()/i',"\${1}uc/images/\${3}",$str);  
echo "
";  
  
//2、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg",并省去宽和高  
print preg_replace('/(/i',"\${1} \${2}uc/images/\${3}>",$str);  
?>