Are there any scripts that anyone knows of that I could use to scan all my scripts to list all of the commands used.
Script to scan all my files for command names
What types of command are you looking for?
See this user contribution - https://www.php.net/manual/en/indexes.functions.php#120641 at this page - https://www.php.net/manual/en/indexes.functions.php
That would get you to the point of being able to read the contents of a file and parse it get a list of functions found in that file.