gjerokrsteski/pimf-framework

<?php
/**
 * Pimf
 *
 * @copyright Copyright (c)  Gjero Krsteski (http://krsteski.de)
 * @license   http://opensource.org/licenses/MIT MIT License
 */

namespace Pimf;

/**
 * Handles the type of interface between web server and PHP
 *
 * @package Pimf
 * @author  Gjero Krsteski <gjero@krsteski.de>
 */
abstract class Sapi
{

    /**
     * Are we in a web environment?
     *
     * @return boolean
     */
    public static function isWeb()
    {
        return self::isApache() || self::isIIS() || self::isCgi() || self::isBuiltInWebServer() || self::isHHVM();
    }

    /**
     * Are we in a cli environment?
     *
     * @return boolean
     */
    public static function isCli()
    {
        return PHP_SAPI === 'cli';
    }

    /**
     * Are we in a cgi environment?
     *
     * @return boolean
     */
    public static function isCgi()
    {
        return PHP_SAPI === 'cgi-fcgi' || PHP_SAPI === 'cgi';
    }

    /**
     * Are we served through Apache[2]?
     *
     * @return boolean
     */
    public static function isApache()
    {
        return PHP_SAPI === 'apache2handler' || PHP_SAPI === 'apachehandler';
    }

    /**
     * Are we served through IIS?
     *
     * @return boolean
     */
    public static function isIIS()
    {
        return PHP_SAPI == 'isapi';
    }

    /**
     * Are we served through PHP's built-in web server.
     *
     * @return bool
     */
    public static function isBuiltInWebServer()
    {
        return PHP_SAPI == 'cli-server';
    }

    /**
     * Are we served through HHVM virtual machine
     *
     * @return bool
     */
    public static function isHHVM()
    {
        return PHP_SAPI == 'srv';
    }

    /**
     * @return bool
     */
    public static function isWindows()
    {
        return (boolean)(strtoupper(substr(PHP_OS, 0, 3)) === 'WIN');
    }
}