foliogallery.php Version 2.0

<!--
    folioGallery v2.0 - 2015-01-30
    (c) 2014 Harry Ghazanian - foliopages.com/php-jquery-ajax-photo-gallery-no-database
    This content is released under the http://www.opensource.org/licenses/mit-license.php MIT License.
-->
<script type="application/javascript">
$(document).ready(function() { // load colorbox settings
    $('.folioGallery').each(function() {
        var targetDiv = (this.id); // id of div to load albums
        $('#'+targetDiv+' .albumpix').colorbox({rel:targetDiv, maxWidth:'96%', maxHeight:'96%', slideshow:true, slideshowSpeed:3500, slideshowAuto:false});
        $('#'+targetDiv+' .vid').colorbox({rel:targetDiv, iframe:true, width:"80%", height:"96%"});
    });
});
</script>
<?php
/***** gallery settings *****/
$mainFolder          = 'albums'; // main folder that holds albums - this folder resides on root directory of your domain
$album_page_url      = $_SERVER['PHP_SELF']; // url of page where gallery/albums are located
$no_thumb            = 'foliogallery/noimg.png';  // show this when no thumbnail exists
$extensions          = array("jpg","png","gif","JPG","PNG","GIF"); // allowed extensions in photo gallery
$itemsPerPage        = '12';    // number of images per page if not already specified in ajax mode
$thumb_width         = '150';   // width of thumbnails in pixels
$sort_albums_by_date = TRUE;    // TRUE will sort albums by creation date (most recent first), FALSE will sort albums by name
$sort_images_by_date = TRUE;    // TRUE will sort thumbs by creation date (most recent first), FALSE will sort images by name
$random_thumbs       = TRUE;    // TRUE will display random thumbnails, FALSE will display the first image from thumbs folders
$show_captions       = TRUE;    // TRUE will display file names as captions on thumbs inside albums, FALSE will display no captions
$num_captions_chars  = '20';    // number of characters displayed in album and thumb captions
/***** end gallery settings *****/

$numPerPage = (!empty($_REQUEST['numperpage']) ? (int)$_REQUEST['numperpage'] : $itemsPerPage);
$fullAlbum  = (!empty($_REQUEST['fullalbum']) ? 1 : 0);

// sanitize string
function sanitize($string)
{
    $string = htmlspecialchars(trim($string), ENT_QUOTES, 'UTF-8');
    return $string;
}

// encode string to
function encodeto($string)
{
    $string = mb_convert_encoding(trim($string), 'UTF-8', 'HTML-ENTITIES');
    return $string;
}

// function to create thumbnails from images
function make_thumb($folder,$file,$dest,$thumb_width) {

    $ext = strtolower(pathinfo($file, PATHINFO_EXTENSION));

    switch($ext)
    {
        case "jpg":
        $source_image = imagecreatefromjpeg($folder.'/'.$file);
        break;

        case "jpeg":
        $source_image = imagecreatefromjpeg($folder.'/'.$file);
        break;

        case "png":
        $source_image = imagecreatefrompng($folder.'/'.$file);
        break;

        case "gif":
        $source_image = imagecreatefromgif($folder.'/'.$file);
        break;
    }

    $width = imagesx($source_image);
    $height = imagesy($source_image);

    if($width < $thumb_width) // if original image is smaller don't resize it
    {
        $thumb_width = $width;
        $thumb_height = $height;
    }
    else
    {
        $thumb_height = floor($height*($thumb_width/$width));
    }

    $virtual_image = imagecreatetruecolor($thumb_width,$thumb_height);

    if($ext == "gif" or $ext == "png") // preserve transparency
    {
        imagecolortransparent($virtual_image, imagecolorallocatealpha($virtual_image, 0, 0, 0, 127));
        imagealphablending($virtual_image, false);
        imagesavealpha($virtual_image, true);
    }

    imagecopyresampled($virtual_image,$source_image,0,0,0,0,$thumb_width,$thumb_height,$width,$height);

    switch($ext)
    {
        case 'jpg': imagejpeg($virtual_image, $dest,80); break;
        case 'jpeg': imagejpeg($virtual_image, $dest,80); break;
        case 'gif': imagegif($virtual_image, $dest); break;
        case 'png': imagepng($virtual_image, $dest); break;
    }

    imagedestroy($virtual_image);
    imagedestroy($source_image);

}

// return array sorted by date or name
function sort_array(&$array,$dir,$sort_by_date) { // array argument must be passed as reference

    if($sort_by_date)
    {
        foreach ($array as $key=>$item)
        {
            $stat_items = stat($dir .'/'. $item);
            $item_time[$key] = $stat_items['ctime'];
        }
        return array_multisort($item_time, SORT_DESC, $array);
    }
    else
    {
        return usort($array, 'strnatcasecmp');
    }

}

// get album and image descriptions
function itemDescription($album, $file='')
{
    if(file_exists($album.'/descriptions.txt'))
    {
        $lines_array = file($album.'/descriptions.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
        if($lines_array)
        {
            if($file == '')
            {
                $album_line = explode(';', $lines_array[0]);
                return (!empty($album_line[0]) && $album_line[0] == 'album' ? $album_line[1] : '');
            }
            else
            {
                foreach($lines_array as $img_line)
                {
                    if(!empty($img_line)) {
                        $img_desc = explode(';', $img_line);
                        if($img_desc[0] == $file) { return $img_desc[1]; }
                    }
                }
            }
        }
        else
        {
            return '';
        }
    }
}


// display pagination
function paginate_array($numPages,$urlVars,$alb,$currentPage) {

   $html = '';

   if ($numPages > 1)
   {

       if ($currentPage > 1)
       {
           $prevPage = $currentPage - 1;
           $html .= '<a class="pag prev" rel="'.$alb.'" rev="'.$prevPage.'" href="?'.$urlVars.'p='.$prevPage.'"></a> ';
       }

       for( $i=0; $i < $numPages; $i++ )
       {
           $p = $i + 1;
           $class = ($p==$currentPage ? 'current-paginate' : 'paginate');
           $html .= '<a rel="'.$alb.'" rev="'.$p.'" class="'.$class.' pag" href="?'.$urlVars.'p='.$p.'"></a>';
       }

       if ($currentPage != $numPages)
       {
           $nextPage = $currentPage + 1;
           $html .= ' <a class="pag next" rel="'.$alb.'" rev="'.$nextPage.'" href="?'.$urlVars.'p='.$nextPage.'"></a>';
       }

   }

   return $html;

}
?>

<div class="fg">

<?php
if (empty($_REQUEST['album'])) // if no album requested, show all albums
{

    $albums = array_diff(scandir($mainFolder), array('..', '.'));
    $numAlbums = count($albums);

    if($numAlbums == 0)
    { ?>

        <div class="titlebar"><p>No albums posted</p></div>

    <?php
    }
    else
    {
        sort_array($albums,$mainFolder,$sort_albums_by_date); // rearrange array either by date or name
        $numPages = ceil( $numAlbums / $numPerPage );

        if(isset($_REQUEST['p']))
         {
            $currentPage = ((int)$_REQUEST['p'] > $numPages ? $numPages : (int)$_REQUEST['p']);
         }
         else
         {
            $currentPage=1;
         }

        $start = ($currentPage * $numPerPage) - $numPerPage; ?>

        <div class="p10-lr">
            <span class="title">Photo Gallery</span> - <?php echo $numAlbums; ?> albums
        </div>

        <div class="clear"></div>

        <?php
        for( $i=$start; $i<$start + $numPerPage; $i++ )
        {

            if(isset($albums[$i]))
            {
                $thumb_pool = glob($mainFolder.'/'.$albums[$i].'/thumbs/*{.'.implode(",", $extensions).'}', GLOB_BRACE);

                if (count($thumb_pool) == 0)
                {
                    $album_thumb = $no_thumb;
                }
                else
                {
                    $album_thumb = ($random_thumbs ? $thumb_pool[array_rand($thumb_pool)] : $thumb_pool[0]); // display a random thumb or the 1st thumb
                } ?>

                <div class="thumb-wrapper">
                    <div class="thumb">
                       <a class="showAlb" rel="<?php echo $albums[$i]; ?>" href="<?php echo $_SERVER['PHP_SELF']; ?>?album=<?php echo urlencode($albums[$i]); ?>">
                         <img src="<?php echo $album_thumb; ?>" alt="<?php echo $albums[$i]; ?>" />
                       </a>
                    </div>
                    <div class="caption"><?php echo substr($albums[$i],0,$num_captions_chars); ?></div>
                </div>

            <?php
            }

        }
        ?>

         <div class="clear"></div>

         <div align="center" class="paginate-wrapper">
            <?php
            $urlVars = "";
            $alb = "";
            echo paginate_array($numPages,$urlVars,$alb,$currentPage);
            ?>
         </div>
    <?php
    }

}
else //display photos in album
{

    $albums_in_maindir = scandir($mainFolder);
    $requested_album = sanitize($_REQUEST['album']); // xss prevention

    // check requested album against directory traverse
    if (!in_array($requested_album, $albums_in_maindir)) { ?>
        <span class="title">Photo Gallery &raquo; <a href="<?php echo $album_page_url; ?>" class="refresh">Index</a></span>
        <p></p>
        <?php die('Invalid Request');
    }

    $album = $mainFolder.'/'.$requested_album;
    $scanned_album = scandir($album);

    $files = array_diff($scanned_album, array('..', '.','thumbs','descriptions.txt'));
    $numFiles = count($files); ?>

    <div class="p10-lr">
        <?php if($fullAlbum==1) { ?>
            <span class="title"><a href="<?php echo $album_page_url; ?>" class="refresh">Index</a></span>
            <span class="title">&raquo;</span>
        <?php } ?>
        <span class="title"><?php echo $requested_album; ?></span> - <?php echo $numFiles; ?> images
    </div>

    <div class="clear"></div>

    <?php
    if($numFiles == 0)
    { ?>

         <div class="p10-lr"><p>There are no images in this album.</p></div>

    <?php
    }
    else
    {
        sort_array($files,$album,$sort_images_by_date); // rearrange array either by date or name
        $numPages = ceil( $numFiles / $numPerPage );

        if(isset($_REQUEST['p']))
        {
            $currentPage = ((int)$_REQUEST['p'] > $numPages ? $numPages : (int)$_REQUEST['p']);
        }
         else
        {
            $currentPage=1;
        }

        $start = ($currentPage * $numPerPage) - $numPerPage;

        if (!is_dir($album.'/thumbs'))
        {
            mkdir($album.'/thumbs');
            chmod($album.'/thumbs', 0777);
            //chown($album.'/thumbs', 'apache');
        }

        for( $i=0; $i <= $numFiles; $i++ )
        {
            if(isset($files[$i]) && is_file($album .'/'. $files[$i]))
            {
                $thumb_url_end = '</a>';
                $ext = strtolower(pathinfo($files[$i], PATHINFO_EXTENSION));
                $prefix = substr($files[$i], 0, -(strlen($ext)+1));
                $prefix_begin = mb_substr($prefix, 0, 6); // 1st 6 characters of caption
                $full_caption = (itemDescription($album, $files[$i]) ? itemDescription($album, $files[$i]) : $prefix); // image captions
                $num_chars = strlen($full_caption);
                $caption = ($num_chars > $num_captions_chars ? substr($full_caption,0,$num_captions_chars).'...' : $full_caption);
                $caption = encodeto($caption);

                switch($prefix_begin)
                {
                    case "utube-":
                    $video_id = explode('utube-', $prefix);
                    $video_id = $video_id[1];
                    $thumb_url_start = '<a href="http://www.youtube.com/embed/'.$video_id.'?rel=0&amp;wmode=transparent" title="'.$caption.'" class="albumpix vid">';
                    break;

                    case "vimeo-":
                    $video_id = explode('vimeo-', $prefix);
                    $video_id = $video_id[1];
                    $thumb_url_start = '<a href="http://player.vimeo.com/video/'.$video_id.'" title="'.$caption.'" class="albumpix vid">';
                    break;

                    default:
                    $thumb_url_start = '<a href="'.$album.'/'.$files[$i].'" title="'.$caption.'" class="albumpix">';
                    break;
                }

                if(in_array($ext, $extensions))
                {
                    $thumb = $album.'/thumbs/'.$files[$i];
                    if (!file_exists($thumb))
                    {
                        make_thumb($album,$files[$i],$thumb,$thumb_width);
                    }

                    if($i<$start || $i>=$start + $numPerPage) { ?><div style="display:none;"><?php } ?>
                    <div class="thumb-wrapper">
                        <div class="thumb">
                            <?php echo $thumb_url_start; ?><img src="<?php echo $thumb; ?>" alt="<?php echo $files[$i]; ?>" /><?php echo $thumb_url_end; ?>
                        </div>
                        <?php if($show_captions) { ?>
                            <div class="caption">
                                <?php if($num_chars > $num_captions_chars) { ?>
                                    <div class="tooltip-container"><?php echo $caption; ?><span class="tooltip"><?php echo $full_caption; ?></span></div>
                                <?php } else { echo $caption; } ?>
                            </div>
                        <?php } ?>
                    </div>
                    <?php if($i<$start || $i>=$start + $numPerPage) { ?></div><?php }
                }

            }

        }

        ?>

        <div class="clear"></div>

        <div align="center" class="paginate-wrapper">
            <?php
            $urlVars = "album=".urlencode($requested_album)."&amp;";
            echo paginate_array($numPages,$urlVars,$requested_album,$currentPage);
            ?>
        </div>

        <?php echo (file_exists($album.'/descriptions.txt') ? '<div class="description-wrapper">'.encodeto(itemDescription($album)).'</div>' : ''); //display album description ?>

    <?php
    } // end if numFiles not 0

}
?>
</div>