默认phpnow的eAccelerator是没有开启的，今天开启下试试，发现开启后apache无法启动，网站无法打开。
查看日志发现：
PHP Warning: [eAccelerator] This build of "eAccelerator" was compiled for PHP version 5.2.9-2. Rebuild it for your PHP version (5.2.10) or download precompiled binaries.\n in Unknown on line 0
PHP Fatal error: Unable to start eAccelerator module in Unknown on line ...