PHP equivalent for DOS/Batch "REM" command, for Batch fanatics

remCommand.php

/*
Batch (Dos/Windows) files haven't remark/comment suport in their syntax. The only
official way is to use "rem", which is actually a command. Coders who changed
their language from batch to PHP may feel unfair, cheated, sad, even suicidal.

Here it is - function that mimics REM from batch files. Because that function is
very complicated, probably there are a lot of bugs. Please note me if you'd find 
any. I hope it will make your batch>php conversion much easier.

Usage:
rem([{mixed}$comment]); 
  * $comment - optional comment
  
Example:
rem('Bite my shiny metal batch');
rem();
rem('Empty comment above, just like grandma did in her batches!');
rem('Thank you, dear author of rem(), you've changed my way of life.');
*/

<?
function rem($comment = null){}

As it was said, the difficulty of coding such function caused bug, that I've just fixed. The comment doesn't have to be string and now it's optional, like original Batch command.