PHP Decode

<?php
include('config/config.php');
if ($_SESSION['verify'] != 'RESPONSIVEfilemanager') {
    die('forbiden');
}
include('include/utils.php');

$_POST['path_thumb'] = $thumbs_base_path.$_POST['path_thumb'];
if (!isset($_POST['path_thumb']) && trim($_POST['path_thumb']) == '') {
    die('wrong path');
}

$realPath = realpath($current_path.$_POST['path']);
$realPathThumb = realpath($_POST['path_thumb']);

if (preg_match('/\.{1,2}[\/|\\\]/', $_POST['path_thumb']) !== 0
    || preg_match('/\.{1,2}[\/|\\\]/', $_POST['path']) !== 0
    || ($realPath && strpos($realPath, realpath($current_path)) !== 0)
    || ($realPathThumb && strpos($realPathThumb, realpath($thumbs_base_path)) !== 0)
) {
    die('wrong path');
}

$language_file = 'lang/en.php';
if (isset($_GET['lang']) && $_GET['lang'] != 'undefined' && $_GET['lang'] != '') {
    $path_parts = pathinfo($_GET['lang']);
    if (is_readable('lang/'.$path_parts['basename'].'.php')) {
        $language_file = 'lang/'.$path_parts['basename'].'.php';
    }
}
require_once $language_file;

$base = $current_path;

if (isset($_POST['path'])) {
    $path = $current_path.str_replace("\0", "", $_POST['path']);
} else {
    $path = $current_path;
}

$cycle = true;
$max_cycles = 50;
$i = 0;
while ($cycle && $i < $max_cycles) {
    $i++;
    if ($path == $base) {
        $cycle = false;
    }

    if (file_exists($path.'config.php')) {
        require_once($path.'config.php');
        $cycle = false;
    }
    $path = fix_dirname($path).'/';
    $cycle = false;
}

$path = $current_path.str_replace("\0", "", $_POST['path']);
$path_thumb = $_POST['path_thumb'];
if (isset($_POST['name'])) {
    $name = $_POST['name'];
    if (preg_match('/\.{1,2}[\/|\\\]/', $name) !== 0) {
        die('wrong name');
    }
}

$info = pathinfo($path);
if (isset($info['extension']) && !(isset($_GET['action']) && $_GET['action'] == 'delete_folder') && !in_array(strtolower($info['extension']), $ext)) {
    die('wrong extension');
}

if (isset($_GET['action'])) {
    switch ($_GET['action']) {
        case 'delete_file':
            if ($delete_files) {
                stopIfSameDir($current_path, array($path, $path_thumb));
                unlink($path);
                if (file_exists($path_thumb)) {
                    unlink($path_thumb);
                }

                $info = pathinfo($path);
                if ($relative_image_creation) {
                    foreach ($relative_path_from_current_pos as $k => $path) {
                        if ($path != '' && $path[strlen($path) - 1] != '/') {
                            $path .= '/';
                        }
                        if (file_exists($info['dirname'].'/'.$path.$relative_image_creation_name_to_prepend[$k].$info['filename'].$relative_image_creation_name_to_append[$k].'.'.$info['extension'])) {
                            unlink($info['dirname'].'/'.$path.$relative_image_creation_name_to_prepend[$k].$info['filename'].$relative_image_creation_name_to_append[$k].'.'.$info['extension']);
                        }
                    }
                }

                if ($fixed_image_creation) {
                    foreach ($fixed_path_from_filemanager as $k => $path) {
                        if ($path != '' && $path[strlen($path) - 1] != '/') {
                            $path .= '/';
                        }
                        $base_dir = $path.substr_replace($info['dirname'].'/', '', 0, strlen($current_path));
                        if (file_exists($base_dir.$fixed_image_creation_name_to_prepend[$k].$info['filename'].$fixed_image_creation_to_append[$k].'.'.$info['extension'])) {
                            unlink($base_dir.$fixed_image_creation_name_to_prepend[$k].$info['filename'].$fixed_image_creation_to_append[$k].'.'.$info['extension']);
                        }
                    }
                }
            }
            break;
        case 'delete_folder':
            if ($delete_folders) {
                stopIfSameDir($current_path, array($path, $path_thumb));
                if (is_dir($path_thumb)) {
                    deleteDir($path_thumb);
                }

                if (is_dir($path)) {
                    deleteDir($path);
                    if ($fixed_image_creation) {
                        foreach ($fixed_path_from_filemanager as $k => $paths) {
                            if ($paths != '' && $paths[strlen($paths) - 1] != '/') {
                                $paths .= '/';
                            }
                            $base_dir = $paths.substr_replace($path, '', 0, strlen($current_path));
                            if (is_dir($base_dir)) {
                                deleteDir($base_dir);
                            }
                        }
                    }
                }
            }
            break;
        case 'create_folder':
            if ($create_folders) {
                create_folder(fix_path($path, $transliteration), fix_path($path_thumb, $transliteration));
            }
            break;
        case 'rename_folder':
            if ($rename_folders) {
                $name = fix_filename($name, $transliteration);
                $name = str_replace('.', '', $name);

                if (!empty($name)) {
                    stopIfSameDir($current_path, array($path, $path_thumb));
                    if (!rename_folder($path, $name, $transliteration)) {
                        die(lang_Rename_existing_folder);
                    }
                    rename_folder($path_thumb, $name, $transliteration);
                    if ($fixed_image_creation) {
                        foreach ($fixed_path_from_filemanager as $k => $paths) {
                            if ($paths != '' && $paths[strlen($paths) - 1] != '/') {
                                $paths .= '/';
                            }
                            $base_dir = $paths.substr_replace($path, '', 0, strlen($current_path));
                            rename_folder($base_dir, $name, $transliteration);
                        }
                    }
                } else {
                    die(lang_Empty_name);
                }
            }
            break;
        case 'rename_file':
            if ($rename_files) {
                $name = fix_filename($name, $transliteration);
                if (!empty($name)) {
                    stopIfSameDir($current_path, array($path, $path_thumb));
                    if (!rename_file($path, $name, $transliteration)) {
                        die(lang_Rename_existing_file);
                    }
                    rename_file($path_thumb, $name, $transliteration);
                    if ($fixed_image_creation) {
                        $info = pathinfo($path);
                        foreach ($fixed_path_from_filemanager as $k => $paths) {
                            if ($paths != '' && $paths[strlen($paths) - 1] != '/') {
                                $paths .= '/';
                            }
                            $base_dir = $paths.substr_replace($info['dirname'].'/', '', 0, strlen($current_path));
                            if (file_exists($base_dir.$fixed_image_creation_name_to_prepend[$k].$info['filename'].$fixed_image_creation_to_append[$k].'.'.$info['extension'])) {
                                rename_file($base_dir.$fixed_image_creation_name_to_prepend[$k].$info['filename'].$fixed_image_creation_to_append[$k].'.'.$info['extension'], $fixed_image_creation_name_to_prepend[$k].$name.$fixed_image_creation_to_append[$k], $transliteration);
                            }
                        }
                    }
                } else {
                    die(lang_Empty_name);
                }
            }
            break;
        case 'duplicate_file':
            if ($duplicate_files) {
                $name = fix_filename($name, $transliteration);
                if (!empty($name)) {
                    if (!duplicate_file($path, $name)) {
                        die(lang_Rename_existing_file);
                    }
                    duplicate_file($path_thumb, $name);
                    if ($fixed_image_creation) {
                        $info = pathinfo($path);
                        foreach ($fixed_path_from_filemanager as $k => $paths) {
                            if ($paths != '' && $paths[strlen($paths) - 1] != '/') {
                                $paths .= '/';
                            }
                            $base_dir = $paths.substr_replace($info['dirname'].'/', '', 0, strlen($current_path));
                            if (file_exists($base_dir.$fixed_image_creation_name_to_prepend[$k].$info['filename'].$fixed_image_creation_to_append[$k].'.'.$info['extension'])) {
                                duplicate_file($base_dir.$fixed_image_creation_name_to_prepend[$k].$info['filename'].$fixed_image_creation_to_append[$k].'.'.$info['extension'], $fixed_image_creation_name_to_prepend[$k].$name.$fixed_image_creation_to_append[$k]);
                            }
                        }
                    }
                } else {
                    die(lang_Empty_name);
                }
            }
            break;
        default:
            die('wrong action');
            break;
    }
}