Thread:Project:Support desk/How can I add something on the top of every page ?/reply

That depends on where exactly you want to have the output of your PHP script:
 * Maybe you can add it using a hook. That would be a clean way.
 * You can modify the skin or create your own one and modify the skin file (like Vector.php for the Vector skin). In that case you should not change the files of the Vector skin, but instead create an own skin to have a clean solution.