apache服务打开后，几十秒以后自动关闭。错误日志如下：
PHP Warning:Cannot load module 'pdo_mysql' because required module 'pdo' is not loaded in Unknown on line 0
[Thu Nov 13 09:40:23 2008] [notice] Apache/2.2.9 (Win32) PHP/5.2.6 configured -- resuming normal operations
[Thu Nov 13 09:40:23 2008] [notice] Server built: Jun 13 2008 04:04:59
[Thu Nov 13 09:40:23 2008] [notice] Parent: Created child process 5548
PHP Warning:Cannot load module 'pdo_mysql' because required module 'pdo' is not loaded in Unknown on line 0
[Thu Nov 13 09:40:23 2008] [notice] Child 5548: Child process is running
[Thu Nov 13 09:40:23 2008] [notice] Child 5548: Acquired the start mutex.
[Thu Nov 13 09:40:23 2008] [notice] Child 5548: Starting 64 worker threads.
[Thu Nov 13 09:40:23 2008] [notice] Child 5548: Starting thread to listen on port 80.
[Thu Nov 13 09:41:00 2008] [notice] Parent: Received shutdown signal -- Shutting down the server.
[Thu Nov 13 09:41:00 2008] [notice] Child 5548: Exit event signaled. Child process is ending.
[Thu Nov 13 09:41:01 2008] [notice] Child 5548: Released the start mutex
[Thu Nov 13 09:41:02 2008] [notice] Child 5548: All worker threads have exited.
[Thu Nov 13 09:41:02 2008] [notice] Child 5548: Child process is exiting
[Thu Nov 13 09:41:02 2008] [notice] Parent: Child process exited successfully.
我知道无法加载'pdo_mysql'，注册了相关的dll后，又是这样的问题。只是少了一句Warning。
module没有加载正确。错误些的很清楚。无法加载'pdo_mysql' ，因为需要pdo这个module。PHP Warning: Cannot load module 'pdo_mysql' because required module 'pdo' is not loaded in Unknown on line 0...
