<?php

    $imagetypes = array("image/jpeg");

    function getImages($folder) {
            $images = array();
            $directory = dir($folder);
            while(($entry = $directory->read()) !== false) {
                    if($entry == '.' || $entry == '..' || !strstr($entry, '.')) {
                            continue;
                    }
                    $images[] = $entry;
            }
            return $images;
    }

    if(isset($_GET['p'])) {
        $pagination_start = intval($_GET['p']);
    } else {
        $pagination_start = 0;
    }

    $images_per_page = 20;
    $path = "tattoos";
    $docroot = "$path";

    $images = getImages($path);
    $images_start = $pagination_start * $images_per_page;
    $images_end = $images_start + $images_per_page;
    $pages_total = ceil(count($images) / $images_per_page);

    for($i = $images_start; $i < $images_end; $i++) {
        $image = $images[$i];
        echo "<a href='{$path}/{$image}'>";
        $filename = explode('.', $image);
        echo "<img src='{$path}/{$filename[0]}th.{$filename[1]}'>";
        echo "</a>\n";
    }

    echo "<div class=\"pagination\"><ul>";
    for($i = 0; $i < $pages_total; $i++) {
        $j = $i + 1;
        echo "<li><a href='index.php?page=gallery&gallery=tattoos&p={$i}'>{$j}</a></li>";
    }
    echo "</ul></div>";

    ?>