On my website I use include($_SERVER["DOCUMENT_ROOT"] . "/header.php"); to include my header. But in my header.php I have a script tag inside the head tag. My question was, does this script gets executed when I include it into my pages.
This is my part of my header.php:
http://pastebin.com/FbFG3B7E
http://php.net/manual/en/function.include.php
That means, PHP gets evaluated and executed. If you mean a HTML script-tag: It just will be printed out. Your browser will retrieve also the HTML in the included file and handle it (also executing the script).
EDIT:
I get following error at your page:
At that position you want to print a variable
$zopim. Try it with{$zopim}.