basic-pagination.php

basic-pagination.php

<ul class="items">
  <?php
    $options = array(
      'quantity'  => 20, // how many item to display for each page
      'around'    => 2,  // how many page btn to show around the current page btn
      'directory' => 'files/tbn-test', // dir to scan for items
    );

    $page = isset($_GET['page']) ? $_GET['page'] : 1;
    $offset = ($page - 1) * $options['quantity']; // $page base index is 1
    $filelist = scandir($options['directory']);

     //get subset of file array
    $selectedFiles = array_slice($filelist, $offset, $options['quantity']);

    foreach ($selectedFiles as $file) {
      $path = $options['directory'] . '/' . $file;
      if (is_array(getimagesize($path))) {
        echo '<li class="item"><img src="'. $path .'"></li>';
      }
    }
  ?>
</ul>
<div class="pagination">
  <a class="btn" <?= $page <= 1 ? 'disabled' : '' ?> href="?page=<?= $page - 1 ?>">&larr;</a>
  <?php
    $len = count($filelist) / $options['quantity'];
    for ($i = 1; $i < $len + 1; $i++) {
      if (($i == 1 || $i > $len) || ($i > $page - $options['around'] && $i < $page + $options['around'])) {
        echo '<a class="btn '. ($page == $i ? 'active' : '') .'" href="?page='.$i.'">'. $i .'</a>';
      } elseif ($i > $page - $options['around'] - 1 && $i < $page + $options['around'] + 1) {
        echo '<a disabled class="btn">&hellip;</a>';
      }
    }
  ?>
  <a class="btn" <?= $page >= $len ? 'disabled' : '' ?> href="?page=<?= $page + 1 ?>">&rarr;</a>
</div>