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Check if Desktop Computer is viewing mobile site and redirect

Posted on 2015-02-05
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Last Modified: 2016-02-25
In PHP how can I check if a desktop browser is viewing my mobile site and redirect to the desktop site?

I have a microsite that's mobile only and if a desktop hits it I want to redirect to the main company home page.

I tried this:
<?php
$useragent=$_SERVER['HTTP_USER_AGENT'];
if(strpos($useragent,'Windows') == true || strpos($useragent,'Mac') == true)
{
    header( 'Location: http://you.tc' ) ;
}
?>

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But on iphone it's redirecting to the home site and should stay on mobile.  I'm assuming there is something else in the user agent I need to check.
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Question by:N R
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6 Comments
 
LVL 23

Accepted Solution

by:
Michael74 earned 500 total points
ID: 40592940
<?php
$useragent=$_SERVER['HTTP_USER_AGENT'];
if(preg_match('/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i',$useragent)||preg_match('/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i',substr($useragent,0,4)))
header('Location: http://detectmobilebrowser.com/mobile');
?>

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http://detectmobilebrowsers.com/
0
 
LVL 11

Author Comment

by:N R
ID: 40592960
Changed the logic to the reverse, but worked, thanks.
0
 
LVL 109

Expert Comment

by:Ray Paseur
ID: 40593306
There's a different way of thinking about this problem today.  We use Twitter Bootstrap instead of building separate sites and redirecting.  You might want to look it up.  The design paradigm is "mobile first" and Bootstrap provides for this, giving you a fluid and adaptable viewport that scales nicely to different devices.  Just a thought...
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LVL 11

Author Comment

by:N R
ID: 40593667
Agreed, but client wanted it to not be visible by desktops, and if so then redirected to their company homepage.
0
 
LVL 109

Expert Comment

by:Ray Paseur
ID: 40594949
Uhh... Why not help the client understand the current technology.  Twitter Bootstrap is not exactly new.  It's not a model-T ford, but it's completely mainstream and makes it possible for a single web application to serve sites to many different browser/viewport combinations.  In other words, it is the framework for many a company home page!
0
 
LVL 11

Author Comment

by:N R
ID: 40594974
It's a microsite for mobile only for a mobile convention, no need for desktop version.
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