xdebug it worked with vim at last , also i started to make it work with eclipse too

Here are some related tutorials

Vim and xdebug setup
http://2bits.com/articles/using-vim-and-xdebug-dbgp-for-debugging-drupal-or-any-php-application.html

eclipse and xdebug
http://dev.phpeclipse.com/wiki/XDebug_and_PHPEclipse

And check the 10 minutes guide to interactive php debugger in vim