manual pagination example for in memory page arrays

paginator.php

<?php

/**
 * include paginator class from ProcessWire core, $config->paths->Modulename can
 * be used to get the path of any module in PW.
 */
 
require_once($config->paths->MarkupPagerNav . "PagerNav.php");

/**
 * create a new PageArray object to fill in results
 */
 
$pa = new PageArray();
$res1 = $pages->find("template=xyz, title%=space");
$res2 = $pages->find("template=abc, title%=hal");

/**
 * add the results (PageArray) to the container (PageArray), doubles will get removed
 */
 
$pa->import($res1);
$pa->import($res2);

/**
 * some variables for paginator
 */
 
$baseUrl = $page->url;
$limit = 4;

/**
 * $input->pageNum returns the /page[n] from the url
 * this requires page numbers enabled on the template for the page
 */
 
$start = ($input->pageNum - 1) * $limit; 
$total = $pa->getTotal();

/**
 * create a new PageNav object with the required inputs to 
 * generate a Pager object to create the markup
 */
 
$pagerNav = new PagerNav($total, $limit, $input->pageNum);

/**
 * now we just get the Pager Array by calling getPager()
 */
 
$pager = $pagerNav->getPager();

/**
 * construct paginator markup by looping the Pager Array
 */
 
$pagerMarkup = '';
foreach($pager as $link) {
    $class = $link->pageNum == $input->pageNum ? 'on' : ''; // is it the current page?
    if($link->type == 'separator') $item = '…'; // is it a separator
        else $item = "<a class='$class' href='{$baseUrl}page{$link->pageNum}/'>$link->label</a>"; // or a normal link
    $pagerMarkup .= "<li>$item</li>";
}

/**
 * output paginator markup
 */
 
echo "<ul class='pager'>" . $pagerMarkup . "</ul>";

echo "total: $total<br/>";
echo "start: $start<br/>";
echo "limit: $limit<br/>";

/**
 * output the merged page array result with using the start and limit evaluated above
 */
 
echo '<ul>';
foreach($pa->find("start=$start, limit=$limit") as $p){
    echo "<li>$p->title</li>";
}
echo '</ul>';

paginator_manual.php

<?php

/**
 * here is a example with using the built in pager 
 * we can use $a->setTotal($n) to configure page array to work with pager
 */

// create new page array for storing pages
$pa = new PageArray();
$res1 = $pages->find("template=mytemplate");
$res2 = $pages->find("template=house");

// import the found page
$pa->import($res1);
$pa->import($res2);

// configuration for pagination needed
$limit = 10;
$total = $pa->count();
$start = ($input->pageNum-1)*$limit;

// output limited list we filter from the complete page array
foreach($pa->filter("sort=-created, limit=$limit, start=$start") as $p){
  echo "<p>$p->title</p>";
}

// page array let's you set the parameters for pagination manually
$pa->setLimit($limit);
$pa->setTotal($total);
$pa->setStart($start);

// now the renderPager() on the page array works as usual
echo $pa->renderPager();