Update erlang.erl

Actual code that compiles.
Remove if statement.

Unnecessary if statement.
Update php.php

Provide a more clear understanding of what functions are available.
Merge pull request #4 from chrisjlee/patch-1

Update php.php
Merge pull request #2 from fenollp/patch-1

Update erlang.erl
Merge pull request #3 from blueblob/patch-1

Remove if statement.
Merge branch 'master' of https://github.com/Prithvirajbilla/helloworld into css