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php截取字符串有关问题! 在线结贴

WBOY
WBOYOriginal
2016-06-13 12:33:53798browse

php截取字符串问题!在线等 在线结贴
yybb_cx.
yybb_xdf.

就像上面的字符串。我只需要_后面和.前面的字母  

比如以上两个  我需要的分别就是  cx 和 xdf   应该怎么处理?

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