save.php

<?php

/**
 * Copyright 2016 Everex https://everex.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

$dir = dirname(__FILE__);

// Save locale file
if(isset($_POST['locale'])){
    $content = $_POST['locale'];
    $ver = isset($_POST['ver']) ? $_POST['ver'] : '';
    if($ver != '1') die('ERROR');
    $user = isset($_SERVER['PHP_AUTH_USER']) ? $_SERVER['PHP_AUTH_USER'] . '-' : '';
    copy($dir . '/locales.js', $dir . '/backup/locales-' . $user . time() . '-(' . $_SERVER["REMOTE_ADDR"] . ').js.bak');
    file_put_contents($dir . '/locales.js', $content);
}

// Save changes
if(isset($_POST['changes'])){
    $content = $_POST['changes'];
    file_put_contents($dir . '/locales-changes.js', $content);
}

echo 'OK';