Php get current domain with protocol

I've written a little function to establish the current site url protocol but I don't have SSL and don't know how to test if it works under https. Can you tell me if this is correct?

function siteURL[]
{
    $protocol = [!empty[$_SERVER['HTTPS']] && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443] ? "//" : "//";
    $domainName = $_SERVER['HTTP_HOST'].'/';
    return $protocol.$domainName;
}
define[ 'SITE_URL', siteURL[] ];

Is it necessary to do it like above or can I just do it like?:

function siteURL[]
{
    $protocol = '//';
    $domainName = $_SERVER['HTTP_HOST'].'/'
    return $protocol.$domainName;
}
define[ 'SITE_URL', siteURL[] ];

Under SSL, doesn't the server automatically convert the url to https even if the anchor tag url is using http? Is it necessary to check for the protocol?

Thank you!

BalusC

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asked Dec 21, 2010 at 19:30

5

This works for me

if [isset[$_SERVER['HTTPS']] &&
    [$_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == 1] ||
    isset[$_SERVER['HTTP_X_FORWARDED_PROTO']] &&
    $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https'] {
  $protocol = '//';
}
else {
  $protocol = '//';
}

answered Jan 11, 2013 at 1:17

Rid IculousRid Iculous

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3

I know it's late, although there is a much more convenient way to solve this kind of problem! The other solutions are quite messy; this is how I would do it:

$protocol = stripos[$_SERVER['SERVER_PROTOCOL'],'https'] === 0 ? '//' : '//';

...or even without condition if you prefer:

$protocol = strtolower[substr[$_SERVER["SERVER_PROTOCOL"],0,strpos[ $_SERVER["SERVER_PROTOCOL"],'/']]].'://';

Have a look at $_SERVER["SERVER_PROTOCOL"]

ashleedawg

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answered Feb 26, 2013 at 23:21

IvoIvo

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12

It is not automatic. Your top function looks ok.

answered Dec 21, 2010 at 19:38

profitphpprofitphp

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3

Some changes:

function siteURL[] {
  $protocol = [[!empty[$_SERVER['HTTPS']] && $_SERVER['HTTPS'] != 'off'] || 
    $_SERVER['SERVER_PORT'] == 443] ? "//" : "//";
  $domainName = $_SERVER['HTTP_HOST'];
  return $protocol.$domainName;
}

Dave Jarvis

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answered Sep 11, 2012 at 6:42

Anoop KAnoop K

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short way

$scheme = $_SERVER['REQUEST_SCHEME'] . '://';

answered Feb 20, 2015 at 17:37

softcod.comsoftcod.com

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2

Because testing port number is not a good practice according to me, my solution is:

define['HTTPS', isset[$_SERVER['HTTPS']] && filter_var[$_SERVER['HTTPS'], FILTER_VALIDATE_BOOLEAN]];

The HTTPSconstant returns TRUE if $_SERVER['HTTPS'] is set and equals to "1", "true", "on" or "yes". Returns FALSE otherwise.

answered Oct 1, 2014 at 15:43

alexalex

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2

For any system except IIS this is quite enough to define site self URL:

$siteURL='http'.[empty[$_SERVER['HTTPS']]?'':'s'].'://'.$_SERVER['HTTP_HOST'].'/';

or

$siteURL='http'.[empty[$_SERVER['HTTPS']]?'':'s'].'://'.$_SERVER['SERVER_NAME'].'/';

depends on what you exactly want: HTTP_HOST vs. SERVER_NAME

answered Sep 15, 2016 at 18:17

In case of proxy the SERVER_PORT may not give the correct value so this is what worked for me -

$protocol = [[!empty[$_SERVER['HTTPS']] && $_SERVER['HTTPS'] != 'off'] || $_SERVER['SERVER_PORT'] == 443 || $_SERVER['HTTP_X_FORWARDED_PORT'] == 443] ? "//" : "//"

answered Aug 26, 2016 at 7:00

HarshitHarshit

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0

Use this server variable to get the protocol details:

 $scheme = $_SERVER['REQUEST_SCHEME'] . '://';
 echo $scheme; //it gives // or //

Note that this server variable is unreliable. For more information take a look at: Is $_SERVER['REQUEST_SCHEME'] reliable?

answered Jul 8, 2015 at 9:11

shashik493shashik493

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1

Extracted from CodeIgniter :

if [ ! function_exists['is_https']]
{
    /**
     * Is HTTPS?
     *
     * Determines if the application is accessed via an encrypted
     * [HTTPS] connection.
     *
     * @return  bool
     */
    function is_https[]
    {
        if [ ! empty[$_SERVER['HTTPS']] && strtolower[$_SERVER['HTTPS']] !== 'off']
        {
            return TRUE;
        }
        elseif [isset[$_SERVER['HTTP_X_FORWARDED_PROTO']] && strtolower[$_SERVER['HTTP_X_FORWARDED_PROTO']] === 'https']
        {
            return TRUE;
        }
        elseif [ ! empty[$_SERVER['HTTP_FRONT_END_HTTPS']] && strtolower[$_SERVER['HTTP_FRONT_END_HTTPS']] !== 'off']
        {
            return TRUE;
        }

        return FALSE;
    }
}

answered Jul 3, 2018 at 9:40

GuillaumeGuillaume

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$protocal = 'http';
if [$_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' || $_SERVER['HTTPS'] == 'on'] {$protocal = 'https';}


echo $protocal;

answered Jun 30, 2016 at 17:39

I know this is an old question but I came across this today since I needed to test for this in my site. It seems the answers above are needlessly complicated. To establish the site protocol, all you have to do is test $_SERVER['HTTPS']

If the protocol is using HTTPS, then $_SERVER['HTTPS'] will return 'on'. If not, the variable will remain empty. For example:
// test if HTTPS is being used. If it is, the echo will return '$SSL_test: on'. If not HTTPS, '$SSL_test' will remain empty.

$SSL_test = $_SERVER['HTTPS'];

echo '
$SSL_test: '.$SSL_test.'
';

if[$SSL_test == true] {
    echo 'You\'re using SSL';
} else {
    echo 'You\'re not using SSL';
} 

You can use the above to easily and cleanly test for HTTPS and implement accordingly. :]

answered Apr 2, 2018 at 23:21

Rob StockiRob Stocki

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1

made a function using the Rid Iculous's answer which worked on my system.

function site_protocol[] {
    if[isset[$_SERVER['HTTPS']] && [$_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == 1] || isset[$_SERVER['HTTP_X_FORWARDED_PROTO']] &&  $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https']  return $protocol = '//'; else return $protocol = '//';
}

Hope it helps

answered May 10, 2014 at 6:28

miyurumiyuru

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I've tested the most voted answer and it didn't work for me, I ended up using:

$protocol = isset[$_SERVER['HTTPS']] ? '//' : '//';

answered May 13, 2016 at 15:10

Pedro LobitoPedro Lobito

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4

Here is how I do it ... it is a shorthand if else version of Rid Iculous's answer ...

$protocol = isset[$_SERVER['HTTPS']] && [$_SERVER['HTTPS'] === 'on' || $_SERVER['HTTPS'] === 1] || isset[$_SERVER['HTTP_X_FORWARDED_PROTO']] && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' ? 'https' : 'http';

answered Nov 14, 2017 at 17:54

Scotty GScotty G

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I think the complete func should look like :

function siteURL[]
{
    $protocol =  "//";
    if [
        //straight
        isset[$_SERVER['HTTPS']] && in_array[$_SERVER['HTTPS'], ['on', 1]]
        ||
        //proxy forwarding
        isset[$_SERVER['HTTP_X_FORWARDED_PROTO']] && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https'
    ] {
        $protocol = '//';
    }

    $domainName = $_SERVER['HTTP_HOST'];
    return $protocol . $domainName;
}

Notes:

• you should look also for HTTP_X_FORWARDED_PROTO [e.g. if proxy server]
• relying on 443 port is not safe [https could be served on different port]
• REQUEST_SCHEME not reliable

answered Feb 19, 2020 at 14:24

koalaokkoalaok

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it's the best solution of https or http use this :

But can't display https or http, so it only use to link your site content like image, etc.

if want to redirect your site in https, add this code in .htaccess file :

 RewriteCond %{CF-Visitor} '"scheme":"http"'
 RewriteRule ^[.*]$ //www.your-domain.com$1 [L]

Change www.your-domain.com with your dowmain name.

answered May 18, 2017 at 16:15

I know I'm a bit late to this party, but if you much prefer not using $_SERVER as it's strongly discouraged, and even deactivated on some PHP frameworks; and you have an apache web server, you can use it's native command thusly: -

$protocol = apache_getenv['HTTPS'] ? '' : '';

answered Mar 5, 2020 at 1:24

JonathanJonathan

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Also late to the party, but here is a much shorter version of Rid Iculous's answer using the Null Coalescing Operator:

$is_ssl = in_array[$_SERVER['HTTPS'] ?? '', ['on', 1]] ||
          [$_SERVER['HTTP_X_FORWARDED_PROTO'] ?? ''] == 'https';
$protocol = $is_ssl ? '//' : '//';

Or:

$protocol = in_array[$_SERVER['HTTPS'] ?? '', ['on', 1]] ||
            [$_SERVER['HTTP_X_FORWARDED_PROTO'] ?? ''] == 'https' ?
            '//' : '//';

answered Jun 2 at 0:41

AranxoAranxo

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