PHP Mobile Redirect and View Full Site

I have viewed many posts on various blogs in which people are seeking functioning mobile redirects. There are many solutions to detect a mobile phone and redirect the user to your mobile site. A PHP mobile detect/redirect is an ideal solution, and will not bog down your page load times. While there are many other mobile detect and redirect solutions, complete solutions that will allow a mobile user back to view the full site are lacking. In the following article, I will show you functioning PHP script that will detect a mobile user, redirect the user, and give the option for the mobile user to "view the full site."

If you follow these instructions you will have a functioning mobile redirect on your site:

First, go to the following URL and download the mobile_detect.php file:

http://code.google.com/p/php-mobile-detect/

Next, follow the instructions on the page, and upload the mobile_detect.php to your root directory,
Insert the following code on your index or home page:

@include("Mobile_Detect.php");
$detect = new Mobile_Detect();
if ($detect->isMobile() && isset($_COOKIE['mobile']))
{
$detect = "false";
}
elseif ($detect->isMobile())
{
header("Location:http://www.yourmobiledirectory.com");
}

When you initially visit your site, the above script will verify if you are viewing the site on a mobile device. If so, you will be directed to http://www.yourmobiledirectory.com. If you are not on a mobile device you will view the regular site.
You may have noticed the following code:

if ($detect->isMobile() && isset($_COOKIE['mobile']))
{
$detect = "false";
}

In this statement I am checking for both a mobile device and a cookie named "mobile". I am using this statement to override the redirect if the mobile user elects to view the full site. The following code is used on the mobile index or home page to set the cookie:

setcookie("mobile","m", time()+3600, "/");


I have also included a link on the mobile site called, "View Full Site", and this directs the user back to the index or home page of the main site. Once back at the main page the cookie, "Mobile", is detected and thus the mobile redirect is overridden.

I know there are a ton of mobile detect and redirect solutions, but I have noticed there are not a lot of "view full site" options. If you use this please leave me a comment, and let me know how it is working out for you. Also, if you have additional methods , mobile redirects, or more specifically "view full site" options, please drop me a line. I am trying to put together a collection to help others. Thanks.

I have added a screenshot of how the php code should look on the mobile index or landing page. Make certain that you are linking the "View Full Site" link on your page back to your homepage. Also, make sure there is no white space between your php code and your html.

Here is a fix. Modify the cookie as follows:

setcookie("mobile","m", time()+3600, "/",".yourdomain.com");

".yourdomain.com"

For example, if your site was, www.redirectsrock.com...

The cookie would be as follows:

setcookie("mobile","m", time()+3600, "/",".redirectsrock.com");

That has been solving most of the problems, especially if you are using a CMS.