<?php require_once "functions.php"; $list_id = $_GET['list_id']; ?> <div class="search"> <form method="post" action="index.php?list_id=<?php echo $list_id; ?> " id="searchForm"> <input type="text" name="search" placeholder="Search"> <input type="hidden" name="list_id" value="<?php echo $list_id; ?> "> </form> <button type="submit" form="searchForm" value="Search"> <span class="fa-stack fa-lg"> <i class="fa fa-circle fa-stack-2x"></i> <i class="fa fa-search fa-stack-1x fa-inverse"></i> </span> </button> </div>