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求一正则,该怎么解决

WBOY
WBOYOriginal
2016-06-13 12:54:07837browse

求一正则

        673
        2
        1067
    


里面的YYYYYYY全部
YYYYYY转换成123 


------解决方案--------------------
echo preg_replace('/([^[^123$1',$s);
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