安装后出现这个错误是什么问题

Warning: include_once(./common.php) [function.include-once]: failed to open stream: No such file or directory in G:\web\xyldyf.com\index.php on line 7

Warning: include_once() [function.include]: Failed opening './common.php' for inclusion (include_path='.;C:\php5\pear') in G:\web\xyldyf.com\index.php on line 7

Fatal error: Call to undefined function sreadfile() in G:\web\xyldyf.com\index.php on line 44

太酷了哦