Paging through MySQL results in PHP

I have an application that returns a set of results from a MySQL query. Let's say I have 100 results from the query, but only want to show 25 per HTML page. The MySQL query is driven by a 'Search' page that creates an array "$keywords" - which can be of any size. I then loop through the $keywords array to create the SQL code. I understand how to use the LIMIT statement in MySQL - so I can 'page' the output, but how do I pass the "$keywords" array with each request for the next page? I create a link with a phrase like: printf(...A HREF="results.php?firstitem=1&items=25&kw=$kw...); but end up just showing that kw=array. Can anyone put me on the right track or point me to some resource? This seems like it should be simple but... Thanks, Nelson