Alternative to http_response_code in versions below php5.4

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It is possible to get HTTP status in versions prior to PHP 5.4 (http_status_code only supported in PHP5.4+)?

I am creating a system of customized error pages, it will not be a system for a specific project, but for compatibility I would like to know if it is possible to detect the state of PHP without using http_response_code.

I need it to be server-type independent, as the script can run on Apache, Nginx and Lighttpd.

Is this possible? I tried $GLOBALS and $_SERVER['REDIRECT_STATUS'], but in the case of the latter, it only works on Apache, in php-fpm only got status 200.

php http-status

  • Have you considered using the function curl_getinfo using as an argument CURLINFO_HTTP_CODE? it is available from PHP 4.0.4. In your first sentence there’s a asserting which contradicts the title. =)

  • @qmechanik I had already seen this, but the problem is that it only gets the status if it sets first, ie only works if you do this: <?php http_response_code(404); echo http_response_code();. This doesn’t work <?php echo http_response_code();

  • @qmechanik I think I have an idea, I will create a false "Location" and set a variable ENV environment with http status code.

  • William, have you had any success? about the idea of Curl, could you use the CURLOPT_NOBODY to order only the header http and not the whole content, so will decrease the time to get the answer.

  • 1

    @qmechanik Thanks for the support and interest, I believe I have achieved as close as possible to a usable result. Have any critical suggestions, you are always welcome :)

  • It would not be enough header('HTTP/1.1 200 OK'); to simplify?

  • @Bacchus http_response_code take or define the code, in case I wanted an alternative that would do both

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In order for it to work prior to 5.4, such as php5.3 and php5.3, you can create "reserved" urls using ErrorDocument (apache, see alternatives to other servers below), using for example:

.htacces (apache)

ErrorDocument 403 /index.php/RESERVED.HTTP-STATUS-403.html
ErrorDocument 404 /index.php/RESERVED.HTTP-STATUS-404.html

Nginx

error_page 404 /RESERVED.HTTP-STATUS-404.html;
error_page 403 /RESERVED.HTTP-STATUS-403.html;

location ~ ^/RESERVED\.HTTP\-STATUS\-(403|404)\.html$ {
    rewrite ^/RESERVED\.HTTP\-STATUS\-(403|404)\.html$ /index.php$0 last;
}

IIS

<httpErrors errorMode="Custom">
    <remove statusCode="403" />
    <remove statusCode="404" />
    <error statusCode="403" path="/index.php/RESERVED.HTTP-STATUS-403.html" responseMode="ExecuteURL" />
    <error statusCode="404" path="/index.php/RESERVED.HTTP-STATUS-501.html" responseMode="ExecuteURL" />
</httpErrors>

PHP

The file must contain this code:

/*Verifica se a função não esta disponível (versões anteriores ao php5.4)*/
if (false === function_exists('http_response_code')) {
    /*Fallback para versões mais antigas que o PHP5.4*/
    function http_response_code($code = null)
    {
        static $currentStatus;

        if ($code === null) {
            if ($currentStatus !== null) {
                return $currentStatus;
            }

            $currentStatus = 200;

            if (empty($_SERVER['PHP_SELF']) === false &&
                preg_match('#/RESERVED\.HTTP\-STATUS\-(\d{3})\.html$#', $_SERVER['PHP_SELF'], $match) > 0)
            {
                $currentStatus = (int) $match[1];
            }
        } elseif (is_int($code) && headers_sent() === false) {
            header('X-PHP-Response-Code: ' . $code, true, $code);
            $currentStatus = $code;
        }

        return $currentStatus;
    }
}

Note that the function will always fire for index.php, but you can switch to error.php or to your liking.

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