如何在Codeigniter中使用mobiledetect.net将mydomain.com重定向到m.mydomain.com？

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]

Answer 1

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;
    }
}