changing %20 in URL using PHP

[JamieH]

Hi

I have found this code, but not sure how it should be applied

a href="/area<?php echo $MM_keepNone.(($MM_keepNone!="")?"&":"")."/".str_replace(' ', '_',$row_rs_town['area']) ?>">View more holiday rentals in <?php echo $row_rs_town['area']; ?></a>

On the inbound page do I put this,

$town=str_replace('_', ' ',$_GET['town']);

or should it be

$row_rs_town=str_replace('_', ' ',$_GET['town']);['area']

Or somthing else,

Thanks for your time

[Rob]

The first one I believe