A PHP script has to start with <?php to tell your computer that it's a PHP script. If that's missing, then the text in that file is usually just displayed.
You aren't using the code formatting tools on this site so I'm not really sure what your first line of code actually contains. It looks to me like there's a single quote (') in it. This will cause an error because of the quotes:
'$FM_VERS = "9.15"; // script version'
The output is
PHP Parse error: syntax error, unexpected end of file in /path/to/file.php on line 3
If you just have one single quote at the beginning:
'$FM_VERS = "9.15"; // script version
Then you get
PHP Parse error: syntax error, unexpected ''$FM_VERS = "9.15"; // script ' (T_ENCAPSED_AND_WHITESPACE) in /tmp/foo/foo.php on line 2
If you remove that, then it works -- at least that one line of code does;
$FM_VERS = "9.15"; // script version
If you are getting some other error, let us know what it is.