Old PHP files not working

I am having a very weird problem and am not sure if it is the files or the php parser it self. I currently have a server running Apache 1.3.23, MySQL 3.23.47, and PHP 4.1.1 on Red Hat 7.2. I have another test server that I have just set up with the latest of the three packages above on RH 7.3. My problem is that when I copy the files from the old server to this one it doesn't seem to want to parse all of the .php files. It is a very simple site. There is a header.php, footer.php, config.php, and a index.php file. All of the files except for the index.php parse correctly. Although, the index.php file doesn't want to do anything with the database. It connects and chooses the database that I want, but when I try to query the db it doesn't do anything. It doesn't give a warning or an error at all. What is weird is if I rewrite the code from scratch on the new PC and then run it, it works fine. I have checked permissions and everything is same between the two files. Both of the files have been edited and created using either gedit or vi. Some of you may be saying that if I can re-type it and it works fine for such a small site then just re-type it and let it go. The problem is this site is small, but there are several others and one being 400+ php files with over 1,000 lines of code and many of the files. I have attached a copy of the index.php file to see if any of you may be able to see what is wrong with it. <<index.php>> Thank you, Travis Trout