如何在eclipse中调试php代码

I want know, how to debug php code in eclipse.

I have added required files for register form.

And i referred some answers from stackoverflow, i took a look through http://www.eclipse.org/pdt/articles/debugger/os-php-eclipse-pdt-debug-pdf.pdf thislink. but i just i confused.

Now i have done like this:

Can you help me, how to debug. Thanks in advance.