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php的preg_replace正则表达式,该如何解决

WBOY
WBOYOriginal
2016-06-13 13:25:171087browse

php的preg_replace正则表达式
比如，判断是否存在XXXX字符串，如果是，则替换前后的尖括号，最后变成[任意个字符XXXX任意个字符]输出。

------解决方案--------------------
preg_replace('//s','[$1]',$str); //少了防止贪婪匹配
------解决方案--------------------

PHP code
$str = "";
$k = 'XXXX';
echo preg_replace("/]*?{$k}[^>]*)>/", '[$1]', $str); <div class="clear">
                 
              
              
        
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