Selenium php testing. Setting up a testsuite

[tjololo]

Hi.
I have lately been testing my websites functionality with selenium.
So far I have been running testcases, but I want to group these in a testsuite to simplify the testing.
The problem is that I don't know how to make a testsuite....
I want to be able to reuse the login testcase, and if I have to testcases for the same site it would me nice to run them in the same session (one login not two).
Does anybody have an example of an php testsuite source?(written in php).

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tjololo