为什么我不能注册。。。。

Warning: include(lib.php) [function.include]: failed to open stream: No such file or directory in D:\usr\www\act.php on line 3

Warning: include() [function.include]: Failed opening 'lib.php' for inclusion (include_path='.;C:\php5\pear') in D:\usr\www\act.php on line 3

Fatal error: Call to undefined function: isalnum() in D:\usr\www\act.php on line 10



为什么老是出现这样注册的时候。。。。

后退多注册2次就好了~多注册几次~