shop/mobile/source/base/Response.php

<?php
namespace base;

class Response
{

    protected static $statusTexts = array(
        '100' => 'Continue',
        '101' => 'Switching Protocols',
        '200' => 'OK',
        '201' => 'Created',
        '202' => 'Accepted',
        '203' => 'Non-Authoritative Information',
        '204' => 'No Content',
        '205' => 'Reset Content',
        '206' => 'Partial Content',
        '300' => 'Multiple Choices',
        '301' => 'Moved Permanently',
        '302' => 'Found',
        '303' => 'See Other',
        '304' => 'Not Modified',
        '305' => 'Use Proxy',
        '306' => '(Unused)',
        '307' => 'Temporary Redirect',
        '400' => 'Bad Request',
        '401' => 'Unauthorized',
        '402' => 'Payment Required',
        '403' => 'Forbidden',
        '404' => 'Not Found',
        '405' => 'Method Not Allowed',
        '406' => 'Not Acceptable',
        '407' => 'Proxy Authentication Required',
        '408' => 'Request Timeout',
        '409' => 'Conflict',
        '410' => 'Gone',
        '411' => 'Length Required',
        '412' => 'Precondition Failed',
        '413' => 'Request Entity Too Large',
        '414' => 'Request-URI Too Long',
        '415' => 'Unsupported Media Type',
        '416' => 'Requested Range Not Satisfiable',
        '417' => 'Expectation Failed',
        '500' => 'Internal Server Error',
        '501' => 'Not Implemented',
        '502' => 'Bad Gateway',
        '503' => 'Service Unavailable',
        '504' => 'Gateway Timeout',
        '505' => 'HTTP Version Not Supported'
    );

    /**
     * Sets response status code.
     *
     * @param string $code
     *            HTTP status code
     * @param string $name
     *            HTTP status text
     *            
     */
    public static function statusCode($code, $text = null)
    {
        $protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.1';
        $text = (null === $text) ? self::$statusTexts[$code] : $text;
        $status = "$protocol $code $text";
        header($status);
    }

    /**
     * Set cookie
     *
     * @param string $name            
     * @param string $value            
     * @param int $expire            
     * @param string $path            
     * @param string $domain            
     * @param string $secure            
     * @param boolean $httpOnly            
     * @return boolean
     */
    public static function cookie($name, $value = null, $expire = null, $path = null, $domain = null, $secure = false, $httpOnly = false)
    {
        return setcookie($name, $value, $expire, $path, $domain, $secure, $httpOnly);
    }

    /**
     * Set response charset
     *
     * @param string $enc            
     * @param string $type            
     */
    public static function charset($enc = 'UTF-8', $type = 'text/html')
    {
        header("Content-Type:$type;charset=$enc");
    }

    /**
     * Redirect to other url
     *
     * @param string $url            
     */
    public static function redirect($url, $code = 302)
    {
        header("Location:$url", true, $code);
        exit();
    }

    /**
     * Alert
     *
     * @param string $text            
     * @param string $url            
     */
    public static function alert($text, $url = null)
    {
        $text = addslashes($text);
        echo "\n<script type=\"text/javascript\">\nalert(\"$text\");\n";
        if ($url) {
            echo "window.location.href=\"$url\";\n";
        }
        echo "</script>\n";
        if ($url)
            exit();
    }

    /**
     * Forces the user's browser not to cache the results of the current request.
     *
     * @return void
     * @access protected
     * @link http://book.cakephp.org/view/431/disableCache
     */
    public static function disableBrowserCache()
    {
        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
        header("Cache-Control: no-store, no-cache, must-revalidate");
        header("Cache-Control: post-check=0, pre-check=0", false);
        header("Pragma: no-cache");
    }

    /**
     * Etag
     *
     * Set or check etag
     *
     * @param string $etag            
     * @param boolean $notModifiedExit            
     */
    public static function etag($etag, $notModifiedExit = true)
    {
        if ($notModifiedExit && isset($_SERVER['HTTP_IF_NONE_MATCH']) && $etag == $_SERVER['HTTP_IF_NONE_MATCH']) {
            self::statusCode('304');
            exit();
        }
        header("Etag: $etag");
    }

    /**
     * Last modified
     *
     * @param int $modifiedTime            
     * @param boolean $notModifiedExit            
     */
    public static function lastModified($modifiedTime, $notModifiedExit = true)
    {
        $modifiedTime = date('D, d M Y H:i:s \G\M\T', $modifiedTime);
        if ($notModifiedExit && isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $modifiedTime == $_SERVER['HTTP_IF_MODIFIED_SINCE']) {
            self::statusCode('304');
            exit();
        }
        header("Last-Modified: $modifiedTime");
    }

    /**
     * Expires
     *
     * @param int $seconds            
     */
    public static function expires($seconds = 1800)
    {
        $time = date('D, d M Y H:i:s', time() + $seconds) . ' GMT';
        header("Expires: $time");
    }
}