pH7Software / pH7-Social-Dating-CMS

WebsiteChecker.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 16 and the first side effect is on line 12.

/**
 * @author         Pierre-Henry Soria <hello@ph7cms.com>
 * @copyright      (c) 2018-2019, Pierre-Henry Soria. All Rights Reserved.
 * @license        See PH7.LICENSE.txt and PH7.COPYRIGHT.txt in the root directory.
 * @link           http://ph7cms.com
 * @package        PH7 / ROOT
 */

namespace PH7;

defined('PH7') or exit(header('Location: ./'));

use RuntimeException;

class WebsiteChecker
{
    const REQUIRED_SERVER_VERSION = '5.6.0';
    const REQUIRED_CONFIG_FILE_NAME = '_constants.php';
    const INSTALL_FOLDER_NAME = '_install/';

    const PHP_VERSION_ERROR_MESSAGE = 'ERROR: Your current PHP version is %s. pH7CMS requires PHP %s or newer.<br /> Please ask your Web host to upgrade PHP to %s or newer.';
    const NO_CONFIG_FOUND_ERROR_MESSAGE = 'CONFIG FILE NOT FOUND! If you want to make a new installation, please re-upload _install/ folder and clear your database.';

    /**
     * @throws RuntimeException
     */
    public function checkPhpVersion()
    {
        if ($this->isIncompatiblePhpVersion()) {
            throw new RuntimeException(
                sprintf(
                    self::PHP_VERSION_ERROR_MESSAGE,
                    PHP_VERSION,
                    self::REQUIRED_SERVER_VERSION,
                    self::REQUIRED_SERVER_VERSION
                )
            );
        }
    }

    /**
     * Clear redirection cache since some folks get it cached.
     *
     * @return void
     */
    public function clearBrowserCache()
    {
        header('Cache-Control: no-store, no-cache, must-revalidate');
        header('Expires: Thu, 01 Jan 1970 00:00:00 GMT');
    }

    public function moveToInstaller()
    {
        header('Location: ' . self::INSTALL_FOLDER_NAME);
    }

    /**
     * @return bool
     */
    public function doesConfigFileExist()
    {
        return is_file(__DIR__ . '/' . self::REQUIRED_CONFIG_FILE_NAME);
    }

    /**
     * @return string
     */
    public function getNoConfigFoundMessage()
    {
        return self::NO_CONFIG_FOUND_ERROR_MESSAGE;
    }

    /**
     * @return bool
     */
    public function doesInstallFolderExist()
    {
        return is_dir(__DIR__ . '/' . self::INSTALL_FOLDER_NAME);
    }

    /**
     * @return bool
     */
    private function isIncompatiblePhpVersion()
    {
        return version_compare(PHP_VERSION, self::REQUIRED_SERVER_VERSION, '<');
    }
}