php连接mysql

bluewhale1

php +mysql+apache 连接，
[Sun Apr 29 13:44:22 2012] [notice] Parent: child process exited with status 255 -- Restarting.
[Sun Apr 29 13:44:23 2012] [notice] Apache/2.2.22 (Win32) PHP/5.2.17 configured -- resuming normal operations
[Sun Apr 29 13:44:23 2012] [notice] Server built: Jan 28 2012 11:16:39
[Sun Apr 29 13:44:23 2012] [notice] Parent: Created child process 7028
[Sun Apr 29 13:44:23 2012] [notice] Child 7028: Child process is running
[Sun Apr 29 13:44:23 2012] [notice] Child 7028: Acquired the start mutex.
[Sun Apr 29 13:44:23 2012] [notice] Child 7028: Starting 64 worker threads.
[Sun Apr 29 13:44:23 2012] [notice] Child 7028: Starting thread to listen on port 80.
这是error.log内容，在浏览器里输入：http://127.0.0.1/conn_mysql.php后网页打不开。请问是哪里出错了？