configUrl: 'config.php',

<?php
header('Content-type: application/xml');

function get_values($filename) {

    $values = array();

    if (is_file($filename)) {

        $dom_doc = new DOMDocument('1.0', 'UTF-8');
        $dom_doc->load($filename);

        $settings_tags = $dom_doc->getElementsByTagName('juiceboxgallery');
        $settings_tag = $settings_tags->item(0);

        if (!is_null($settings_tag)) {
            foreach ($settings_tag->attributes as $attribute) {
                $name = $attribute->nodeName;
                $value = $attribute->nodeValue;
                $values[$name] = $value;
            }
        }
    }

    return $values;
}

function filter_element($value) {
    return $value !== '.' && $value !== '..';
}

function sort_images_datetime($a, $b) {
    $a_datetime = get_datetime($a);
    $b_datetime = get_datetime($b);
    if ($a_datetime === $b_datetime) {
        return 0;
    }
    return $a_datetime < $b_datetime ? -1 : 1;
}

function clean_url($url, $directory) {
    $output = rtrim(trim($url), '/');
    $output = $directory ? $output . '/' : $output;
    if (preg_match('/^https?:/i', $output)) {
        $output = preg_replace('/^(https?:)\/*(.*)/i', '\\1//\\2', $output);
        $output = strtolower(parse_url($output, PHP_URL_SCHEME)) . '://' . parse_url($output, PHP_URL_HOST) . preg_replace('/\/+/', '/', parse_url($output, PHP_URL_PATH));
    } else {
        $output = preg_replace('/\/+/', '/', $output);
    }
    return $output;
}

function get_attachments_folder($folder_url) {
    $attachments = array();
    if (preg_match('/^https?:\/\//', $folder_url)) {
        $dom_doc = new DOMDocument('1.0', 'UTF-8');
        $success = @$dom_doc->loadHTMLFile($folder_url);
        if ($success) {
            foreach ($dom_doc->getElementsByTagName('a') as $element) {
                $attachments[] = $folder_url . rawurldecode(basename($element->getAttribute('href')));
            }
        }
    } else {
        $leading_slash = strpos($folder_url, '/') === 0;
        $document_root = isset($_SERVER['DOCUMENT_ROOT']) ? $_SERVER['DOCUMENT_ROOT'] : '';
        $root_dir = rtrim($document_root, '/');
        $directory = $leading_slash ? $root_dir . $folder_url : realpath(dirname(__file__) . '/' . $folder_url);
        if (is_dir($directory)) {
            $array = @scandir($directory);
            if ($array) {
                $files = array_filter($array, 'filter_element');
                $https = isset($_SERVER['HTTPS']) ? $_SERVER['HTTPS'] : '';
                $scheme = $https === 'on' ? 'https://' : 'http://';
                $path = $leading_slash ? $folder_url : str_replace($root_dir, '', $directory) . '/';
                $server_name = isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : '';
                foreach ($files as $file) {
                    $attachments[] = $scheme . $server_name . $path . $file;
                }
            }
        }
    }
    return $attachments;
}

function process_tag_folder($attachments, $comma_separated_values, $mode) {
    $output = $attachments;
    $media_tags = array_filter(array_map('trim', explode(',', $comma_separated_values)), 'strlen');
    $media_tags_count = count($media_tags);
    if ($media_tags_count > 0) {
        foreach ($attachments as $key=>$attachment) {
            $image_url = encode_url($attachment);
            $info = array();
            $image_size = @getimagesize($image_url, $info);
            $iptc = array();
            if ($image_size && isset($info['APP13'])) {
                $iptc = @iptcparse($info['APP13']);
            }
            $image_keywords = $iptc && isset($iptc['2#025']) ? $iptc['2#025'] : array();
            $tags = array_filter(array_map('trim', $image_keywords), 'strlen');
            
            
            $array_intersect_count = count(array_intersect($media_tags, $tags));
            if (($mode === 'any' && $array_intersect_count === 0) || ($mode === 'all' && $array_intersect_count !== $media_tags_count)) {
                unset($output[$key]);
            }
        }
    }
    return array_values($output);
}

function order_attachments($attachments, $order) {
    $output = array();
    $all = $attachments;
    switch ($order) {
        case 'descending':
            $output = array_reverse($all);
            break;
        case 'shuffle':
            shuffle($all);
            $output = $all;
            break;
        case 'ascending':
        default:
            $output = $all;
            break;
    }
    return $output;
}

function encode_url($url) {
    $parse_url = parse_url($url);
    $scheme = isset($parse_url['scheme']) ? $parse_url['scheme'] : '';
    $host = isset($parse_url['host']) ? $parse_url['host'] : '';
    $path = isset($parse_url['path']) ? $parse_url['path'] : '';
    $query = isset($parse_url['query']) ? $parse_url['query'] : '';
    $implode_path = array();
    $explode_path = explode('/', $path);
    foreach ($explode_path as $fragment_path) {
        if ($fragment_path !== '') {
            $implode_path[] = rawurlencode($fragment_path);
        }
    }
    $new_path = !empty($implode_path) ? implode('/', $implode_path) : '';
    $implode_query = array();
    $explode_query = explode('&', $query);
    foreach ($explode_query as $fragment_query) {
        if ($fragment_query !== '') {
            $explode_fragment_query = explode('=', $fragment_query, 2);
            if (count($explode_fragment_query) === 2) {
                $implode_query[] = $explode_fragment_query[0] . '=' . urlencode($explode_fragment_query[1]);
            }
        }
    }
    $new_query = !empty($implode_query) ? '?' . implode('&', $implode_query) : '';
    return $scheme . '://' . $host . '/' . $new_path . $new_query;
}

function line_break($input) {
    return preg_replace('/\r\n|\r|\n/', '<br />', $input);
}

function strip_control_characters($input) {
    $output = @preg_replace('/\p{Cc}+/u', '', $input);
    return $output ? $output : $input;
}

$dom_doc = new DOMDocument('1.0', 'UTF-8');
$dom_doc->formatOutput = true;

$settings_tag = $dom_doc->createElement('juiceboxgallery');

$gallery_filename = 'config.xml';

if (is_file($gallery_filename)) {

    $values = get_values($gallery_filename);

    foreach ($values as $key=>$value) {
        $settings_tag->setAttribute($key, $value);
    }

}

$custom_values = array();

$custom_values['e_folderUrl'] = 'images'; // Path to folder containing images
$custom_values['e_folderTags'] = 'one,two'; // Comma-separated list of tags
$custom_values['e_folderTagMode'] = 'any'; // Can be 'all' or 'any'
$custom_values['e_folderTitle'] = 'filename'; // Can be 'filename' or 'iptc'
$custom_values['e_folderCaption'] = 'iptc';  // Can be 'filename' or 'iptc'
$custom_values['e_folderSort'] = 'filename'; // Can be 'filename' or 'date'
$custom_values['e_folderOrder'] = 'ascending'; // Can be 'ascending', 'descending' or 'shuffle'
$custom_values['e_linkTarget'] = '_blank'; // Can be '_blank', '_parent', '_self' or '_top'
$custom_values['e_displayTitle'] = 'true'; // Can br 'true' or 'false'
$custom_values['e_displayCaption'] = 'true'; // Can br 'true' or 'false'

$custom_values['e_folderUrl'] = clean_url($custom_values['e_folderUrl'], true);
$custom_values['e_folderTags'] = trim($custom_values['e_folderTags']);
$custom_values['e_displayTitle'] = isset($custom_values['e_displayTitle']) ? $custom_values['e_displayTitle'] : 'false';
$custom_values['e_displayCaption'] = isset($custom_values['e_displayCaption']) ? $custom_values['e_displayCaption'] : 'false';

$attachments = get_attachments_folder($custom_values['e_folderUrl']);

if ($attachments) {
    $attachments = process_tag_folder($attachments, $custom_values['e_folderTags'], $custom_values['e_folderTagMode']);
    switch ($custom_values['e_folderSort']) {
        case 'filename':
            natcasesort($attachments);
            break;
        case 'date':
            usort($attachments, 'sort_images_datetime');
            break;
        default:
            break;
    }
    $attachments = order_attachments($attachments, $custom_values['e_folderOrder']);
    foreach ($attachments as $attachment) {
        $image_url = encode_url($attachment);
        $iptc = array();
        if (($custom_values['e_displayTitle'] === 'true' && $custom_values['e_folderTitle'] === 'iptc') || ($custom_values['e_displayCaption'] === 'true' && $custom_values['e_folderCaption'] === 'iptc')) {
            $info = array();
            $image_size = @getimagesize($image_url, $info);
            if ($image_size && isset($info['APP13'])) {
                $iptc = @iptcparse($info['APP13']);
            }
        }
        $image_element = $dom_doc->createElement('image');
        $image_element->setAttribute('imageURL', $image_url);
        $image_element->setAttribute('thumbURL', $image_url);
        $image_element->setAttribute('linkURL', $image_url);
        $image_element->setAttribute('linkTarget', $custom_values['e_linkTarget']);
        if ($custom_values['e_displayTitle'] === 'true') {
            $title_element = $dom_doc->createElement('title');
            $image_title = '';
            switch ($custom_values['e_folderTitle']) {
                case 'filename':
                    $image_title = pathinfo($attachment, PATHINFO_FILENAME);
                    break;
                case 'iptc':
                    $image_title = $iptc && isset($iptc['2#005']) ? $iptc['2#005'][0] : '';
                    break;
                default:
                    break;
            }
            $image_title = line_break($image_title);
            $image_title = strip_control_characters($image_title);
            $title_text = $dom_doc->createCDATASection($image_title);
            $title_element->appendChild($title_text);
            $image_element->appendChild($title_element);
        }
        if ($custom_values['e_displayCaption'] === 'true') {
            $caption_element = $dom_doc->createElement('caption');
            $image_caption = '';
            switch ($custom_values['e_folderCaption']) {
                case 'filename':
                    $image_caption = pathinfo($attachment, PATHINFO_FILENAME);
                    break;
                case 'iptc':
                    $image_caption = $iptc && isset($iptc['2#120']) ? $iptc['2#120'][0] : '';
                    break;
                default:
                    break;
            }
            $image_caption = line_break($image_caption);
            $image_caption = strip_control_characters($image_caption);
            $caption_text = $dom_doc->createCDATASection($image_caption);
            $caption_element->appendChild($caption_text);
            $image_element->appendChild($caption_element);
        }
        $settings_tag->appendChild($image_element);
    }
}

$dom_doc->appendChild($settings_tag);

echo $dom_doc->saveXML();
?>