<?php

$link_start = 'index.php?';
$search = isset($_GET['search'])   ?  urlencode($_GET['search']) : '' ;
if (isset($_GET['search']))
{

    $link = array('search' => $search,
                  'p' => 'replace');

} else {
    $link = array('page' => 'list',
                'p' => 'replace');
}

$count = $db->getCountInDb(urldecode($search));
$students = $db->searchFromStudents(urldecode($search), $page);
$pageLinker= $link_start . http_build_query($link) . "\n";