嘿，我使用XDebug和KCachegrind来检查服务器端发生了什么.

Hey, I use XDebug and KCachegrind to check out whats going on server side.

http://kcachegrind.sourceforge.net/html/Home.html

http://www.xdebug.org/

它们非常容易设置，并且对我确定代码中的瓶颈非常有价值.

They are pretty easy to set up and have been invaluable to me in identifying bottlenecks in my code.