materio-base-d7/sites/all/libraries/elfinder/php/editors/ZipArchive/editor.php

<?php

class elFinderEditorZipArchive extends elFinderEditor
{
    public function enabled()
    {
        return (!defined('ELFINDER_DISABLE_ZIPEDITOR') || !ELFINDER_DISABLE_ZIPEDITOR) &&
               class_exists('Barryvdh\elFinderFlysystemDriver\Driver') && 
               class_exists('League\Flysystem\Filesystem') &&
               class_exists('League\Flysystem\ZipArchive\ZipArchiveAdapter');
    }
}