File phpboost/environment/ServerConfiguration.class.php

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<?php
/**
 * @package     PHPBoost
 * @subpackage  Environment
 * @copyright   &copy; 2005-2019 PHPBoost
 * @license     https://www.gnu.org/licenses/gpl-3.0.html GNU/GPL-3.0
 * @author      Loic ROUCHON <horn@phpboost.com>
 * @version     PHPBoost 5.2 - last update: 2019 03 26
 * @since       PHPBoost 3.0 - 2010 05 30
 * @contributor Julien BRISWALTER <j1.seth@phpboost.com>
 * @contributor mipel <mipel@phpboost.com>
*/

class ServerConfiguration
{
    const MIN_PHP_VERSION = '5.6';
    const RECOMMENDED_PHP_VERSION = '7.1';
    private static $mod_rewrite = 'mod_rewrite';

    public static function get_phpversion()
    {
        $system_phpversion = phpversion();
        $matches = array();
        if (preg_match('`^([0-9]+(?:\.[0-9]+){0,2})`u', $system_phpversion, $matches))
        {
            return $matches[1];
        }
        return $system_phpversion;
    }

    /**
     * @return true if php version fits to phpboost's requirements.
     */
    public function is_php_compatible()
    {
        return self::get_phpversion() >= self::MIN_PHP_VERSION;
    }

    /**
     * @return true if GD library is available, else false.
     */
    public function has_gd_library()
    {
        return @extension_loaded('gd');
    }

    /**
     * @return true if curl library is available, else false.
     */
    public function has_curl_library()
    {
        return @extension_loaded('curl');
    }

    /**
     * @return true if MBstring (UTF-8) library is available, else false.
     */
    public function has_mbstring_library()
    {
        return @extension_loaded('mbstring');
    }

    /**
     * @return true if url rewriting is available, else false.
     */
    public function has_url_rewriting()
    {
        if (function_exists('apache_get_modules'))
        {
            return in_array(self::$mod_rewrite, apache_get_modules());
        }
        throw new UnsupportedOperationException('can\'t check url rewriting availability');
    }
}
?>