Simpler way to add the XDEBUG_SESSION_START cookie/variable?

I use vim with debugger and xdebug to walk trough PHP applications.

In firefox (or any other browser), I then need to open up the page, call a URL with XDEBUG_SESSION_START=1 appended to it, in order to tell the xdebug PHP-plugin to start the debug-server.

This works fine, but can it be made simpler?

Is there some plugin for firefox that allows me add this session automatically? Some xdebug setting that allows me to circumvent this alltogether? Or some vim-addon, script or trick that allows me to call firefox with that parameter added automatically?