HTTP or HTTPS | CSS-Tricks

Code Snippets → PHP → HTTP or HTTPS

Chris Coyier on Sep 7, 2012

if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off'
    || $_SERVER['SERVER_PORT'] == 443) {

  // HTTPS

} else {

  // HTTP

}

Comments

Alex

Permalink to comment# November 10, 2012

Thank you so much for this… I’ve been trying to do something similar for the last 2 weeks… can’t believe I’ve just found this now!!

Reply

Full-R

# January 15, 2021

Very unstable future because server environment can be switched. Try to use this future:

function detectSSL(): ?bool {

// check HTTPS protocol
if( isset($_SERVER['HTTPS']) ) {

    if( 'off' !== strtolower($_SERVER['HTTPS']) ) {

        return true;

    }

    if( 1 === (int)$_SERVER['HTTPS'] ) {

        return true;

    }

}

if( isset($_SERVER['HTTP_X_FORWARDED_PROTO']) ) {

    if( strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) === 'https' ) {

        return true;

    }

}

if( isset($_SERVER['REQUEST_SCHEME']) ) {

    if( strtolower($_SERVER['REQUEST_SCHEME'] === 'https') ) {

        return true;

    }

}

// check server port
if( isset($_SERVER['SERVER_PORT']) ) {

    if( 443 === (int)$_SERVER['SERVER_PORT'] ) {

        return true;

    }

}

// non-SSL
return null;

}

.htaccess

SSL schema off

RewriteCond %{HTTPS} off

RewriteRule .* – [E=REQUEST_SCHEME:http]

SSL schema

RewriteCond %{HTTPS} on

RewriteRule .* – [E=REQUEST_SCHEME:https]

Comments

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