调试对于学习新语言的意义
http://www.zendstudio.net/zend-studio-tutorial/install-zend_debugger/
http://downloads.zend.com/pdt/server-debugger/
http://files.zend.com/help/Zend-Studio/installing_the_zend_debugger_toolbar.htm
http://blog.csdn.net/newjueqi/article/details/7209857
