but I want get tags that their filenames includes "next.gif" or "pre.gif"

for example :

$page = '
<img border="0" alt="icon" src="http://www.site.com/images/man.gif" width="90" height="90">
<img border="0" alt="icon" src="http://www.site.com/images/pre.gif" width="90" height="v">
<img border="0" alt="icon" src="http://www.site.com/images/2.gif">
<img border="0" alt="icon" src="http://www.site.com/images/next.gif" width="90" height="90">
';

and I output should be like this :

   <img border="0" alt="icon" src="http://www.site.com/images/pre.gif" width="90" height="90">
    <img border="0" alt="icon" src="http://www.site.com/images/next.gif" width="90" height="90">

此代码获取所有img标签 p> 

  preg_match_all（'/  ＆lt; img [^＆gt;] +＆gt; / i'，$ a，$ page）; 
  code>  pre> 
 
 
但我想要获取其文件名包含的标签“next  .gif“或”pre.gif“ p> 
 
 


例如： p> 
 
 


  $ page ='
＆lt; img border =”0“  alt =“icon”src =“http://www.site.com/images/man.gif”width =“90”height =“90”＆gt; 
＆lt; img border =“0”alt =“icon”  src =“http://www.site.com/images/pre.gif”width =“90”height =“v”＆gt; 
＆lt; img border =“0”alt =“icon”src =“http：  //www.site.com/images/2.gif">
<img border =“0”alt =“icon”src =“http://www.site.com/images/next.gif”width  =“90”height =“90”＆gt; 
'; 
  code>  pre> 
 
 
我的输出应该是这样的： p> 
 
 


 ＆lt; img border =“0”alt =“icon”src =“http://www.site.com/images/pre.gif”width =“90”height =“90”＆gt; 
  ＆lt; img border =“0”alt =“icon”src =“http://www.site.com/images/next.gif”width =“90”height =“90”＆gt; 
  code>   pre> 
  div>

答

I'd have to go with this one:

/(<img[^>]*src=".*?(?:pre\.gif|next\.gif)"[^>]*>)/i

Or in PHP:

$regexp = '/(<img[^>]*src=".*?(?:pre\.gif|next\.gif)"[^>]*>)/i';
$iResults = preg_match_all($regexp, $str, $aMatches);
print_r($aMatches); // you'll see what you need

-- edit: Oops. I made a mistake. The . in pre.gif and next.gif in the regexp the regexp must be escaped!! I didn't before. -- edit

PS. You might be using preg_match_all wrong. The arguments are: (pattern, subject, &matches)

PS. The results of my pattern + your subject:

Array
(
    [0] => Array
        (
            [0] => <img border="0" alt="icon" src="http://www.site.com/images/pre.gif" width="90" height="v">
            [1] => <img border="0" alt="icon" src="http://www.site.com/images/next.gif" width="90" height="90">
        )
    [1] => Array
        (
            [0] => <img border="0" alt="icon" src="http://www.site.com/images/pre.gif" width="90" height="v">
            [1] => <img border="0" alt="icon" src="http://www.site.com/images/next.gif" width="90" height="90">
        )
)

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