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一个很简单的字符串切分有关问题

WBOY
WBOYOriginal
2016-06-13 13:39:45918browse

一个很简单的字符串切分问题
job***@apple.com
chenghai***@qq.com

让@左边的四个字符替换为 “*”

------解决方案--------------------

PHP code


$str = 'tstkfeacbcs@ss.cds';
echo preg_replace('/.{4}@/', '****@', $str);

//tstkfea****@ss.cds <div class="clear">
                 
              
              
        
            </div>
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