<?php
      // credits to kkeith29
     // by desiboy aka 3lite
      $thispage = 'gallery.php';
      $imageDir = 'thumbs/';
      $perPage = 50; //total images to display per page
      $perRow = 5; //total images per row
      if ( isset( $_GET['reset'] ) ) {
      unset( $_SESSION['chunks'] );
      }
      if ( !isset( $_SESSION['chunks'] ) ) {
      if ( is_dir( $imageDir ) ) {
      if ( $dir = opendir( $imageDir ) ) {
      while ( ( $file = readdir( $dir ) ) !== false ) {
      if ( $file !== '.' && $file !== '..' ) {
      $images[] = $file;
      }
      }
      closedir( $dir );
      }
      else {
      die("Unable to read directory - {$imageDir}");
      }
      }
      shuffle( $images );
      $_SESSION['chunks'] = array_chunk( $images,$perPage );
      }
      $page = 1;
      if ( isset( $_GET['page'] ) && $_GET['page'] > 0 ) {
      $page = (int) $_GET['page'];
      }
       $images[] = $file;
      $chunk =& $_SESSION['chunks'];
      $total = count( $chunk );
      $images[] = $file;
      if ( isset( $chunk[$page-1] ) ) {
      $images = $chunk[$page-1];
      $html = "<table cellspacing=\"0\" cellpadding=\"3\">\n\t<tr>\n";
      $i = 0;
      foreach( $images as $image ) {
      if ( $i == $perRow ) {
      $html .= "\t</tr>\n\t<tr>\n";
      $i = 0;
      }
      $html .= "\t\t<td><a href=\"/?v={$image}\"><img src=\"{$imageDir}{$image}\" /></a></td>\n";
      $i++;
      }
      $html .= "\t<tr>\n";
      if ( $total > 1 ) {
      $nav = '';
      if ( $page > 1 ) {
      $nav .= "<a href=\"{$thispage}?page=1\">[FIRST]</a><a href=\"{$thispage}?page=" . ( $page - 1 ) . "\">[PREV]</a>";
      }
      $i = 1;
      while( $i < $total + 1 ) {
      $nav .= "<a href=\"{$thispage}?page={$i}\">[{$i}]</a>";
      $i++;
      }
      if ( $page < $total ) {
      $nav .= "<a href=\"{$thispage}?page=" . ( $page + 1 ) . "\">[NEXT]</a><a href=\"{$thispage}?page={$total}\">[LAST]</a>";
      }
      $html .= "\t<tr>\n\t\t<td colspan=\"{$perRow}\">{$nav}</td>\n\t</tr>\n";
      }
      $html .= "</table><br /><br /><a href=\"{$thispage}?reset=true\">Shuffle Images</a>";
      echo $html;
      }
      ?>