How to redirect mydomain.com to m.mydomain.com with mobiledetect.net in codeigniter?

Question

I want to direct mydomain.com to m.mydomain.com if the user opens the website via mobile. I use mobiledetect.net and I have installed it using a composer. when I try to open a website via my mobile I get an error notification "ERR_TOO_MANY_REDIRECTS".

This my controller :

class Welcome extends CI_Controller {

    public function __construct()
    {
        parent::__construct();
        $this->load->helper('url');
    }

    public function index()
    {
        $detect = new Mobile_Detect;
        if($detect->isMobile()) {
            header("location: http://m.mydomain.com");
            exit;
        }
    }
}

how can I fix this error?

I only use the default htaccess from the CI documentation

HTACCESS

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

please show your .htaccess or windows equivalent

Vickel
– Vickel

2019-07-27 14:59:30 +00:00
Commented Jul 27, 2019 at 14:59 — Vickel
– Vickel, Commented Jul 27, 2019 at 14:59
I only use the default htaccess from the CI documentation

yogaboyz88
– yogaboyz88

2019-07-27 16:04:40 +00:00
Commented Jul 27, 2019 at 16:04 — yogaboyz88
– yogaboyz88, Commented Jul 27, 2019 at 16:04

Vickel · Accepted Answer · 2019-07-28 15:50:25Z

0

you need to exclude detection of mobile, when you are using the mobile site. You can achieve this like this:

public function index()
{
    $host='http://'.$_SERVER["HTTP_HOST"];
    $detect = new Mobile_Detect;
    if($detect->isMobile() && $host!='http://m.mydomain.com') {
        header("location: http://m.mydomain.com");
        exit;
    }
}

edited Jul 28, 2019 at 15:50

answered Jul 27, 2019 at 16:10

Vickel

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6 Comments

yogaboyz88 Over a year ago

this works. but before going directly to m.mydomain.com, the error message still appears about a few seconds. not directly to m.mydomain.com

Vickel Over a year ago

this might be an cache issue, try with another mobile browser or other phone

yogaboyz88 Over a year ago

I have tried with different devices and deleted the browser cache but still like that

Vickel Over a year ago

I've added 'http://'to build the $host variable. Now it should match at the first try. before it was looking to match m.mydomain.com, which it didn't (hence the error) then redirects to http://m.mydomain.comand matches. Now it should match in the 1st place. please confirm.

yogaboyz88 Over a year ago

this works :) can you tell me, how to make this script run on all controllers??

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