[Resolved] Simple PHP expression - help please

[Aurasia]

I'm trying to modify the ID value of a link which looks something like this:

<a href="my_article.php?id=<?php echo $row_Recordset1['id']; ?>">Previous</a>

That pulls the id value in the URL which it's supposed to do. But say I wanted to create a variable that is one value less than the 'id' value. I've tried this:

<?php $previousid = id - 1; echo $row_Recordset1['previousid']; ?>

What's wrong with that function? Is there a better way to do this?

Thanks!

[mrhappiness]

<a href="my_article.php?id=<?php echo $row_Recordset1['id'] - 1; ?>">Previous</a> 

like this?

[Aurasia]

That's it, thanks!