求问一个正则表达式的有关问题-PHP Tutorial-php.cn

求问一个正则表达式的有关问题

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Release： 2016-06-13 11:38:42

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求问一个正则表达式的问题
想匹配一个网页地址中的所有图像地址，写了正则表达式如下：

$reg="/<img \s*.*src\s*=\s*[\"|\']?\s*([^ alt="求问一个正则表达式的有关问题" >\"\']*)/i";

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为什么像如下的图像文件地址：

<img  src="../Images/Album Cover/album_012.jpg" alt="求问一个正则表达式的有关问题" >

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只能匹配到：


到空格的时候就终止了？
（[^>\"\']*）这个条件应该不包含空格啊？
                                              
                                  分享到：                                  
              

------解决方案--------------------
正则没错，建议贴出你的代码以供分析。
------解决方案--------------------
$reg="/------解决方案--------------------
\']?\s*([^>\"\']*)/i";
$s = '<img  src="../Images/Album Cover/album_012.jpg" alt="求问一个正则表达式的有关问题" >';
preg_match_all($reg, $s, $m);
print_r($m);
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Array
(
    [0] => Array
        (
            [0] =>         )

    [1] => Array
        (
            [0] => ../Images/Album Cover/album_012.jpg
        )

)

                 
              
              
        
            
                
            
            
                                
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                        images img nbsp src                    
                
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