php/php.samples/samples_src/TodoList/config/Config.php

<?php
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

namespace TodoList\Config;

use \Exception;

/**
 * Application configuration.
 */
final class Config {

    /** @var array config data */
    private static $DATA = null;


    /**
     * @return array
     * @throws Exception
     */
    public static function getConfig($section = null) {
        if ($section === null) {
            return self::getData();
        }
        $data = self::getData();
        if (!array_key_exists($section, $data)) {
            throw new Exception('Unknown config section: ' . $section);
        }
        return $data[$section];
    }

    /**
     * @return array
     */
    private static function getData() {
        if (self::$DATA !== null) {
            return self::$DATA;
        }
        self::$DATA = parse_ini_file(__DIR__ . '/config.ini', true);
        return self::$DATA;
    }

}