Drupal: Pager for array content

/**
 * https://www.drupal.org/node/1966736#comment-8792051
 */
<?php
  $per_page = 10;
  
  // Initialize the pager
  $current_page = pager_default_initialize(count($rows), $per_page);
  
  // Split your list into page sized chunks.
  $chunks = array_chunk($rows, $per_page, TRUE);
  
  // Show the appropriate items from the list
  $output = theme('table', array('header' => $header, 'rows' => $chunks[$current_page]));
  
  // Show the pager
  $output .= theme('pager', array('quantity',count($rows)));
?>