php - iphone, android detect

This basic mobile_user_agent_switch() function will allow you to quickly check if mobile visitor is using one of the following devices.

SUPPORTED DEVICES

iPhone
iPad
Android
Blackberry

THE MOBILE_USER_AGENT_SWITCH() FUNCTION

/*
*	Mobile device detection
*/
if( !function_exists('mobile_user_agent_switch') ){
	function mobile_user_agent_switch(){
		$device = '';
 
		if( stristr($_SERVER['HTTP_USER_AGENT'],'ipad') ) {
			$device = "ipad";
		} else if( stristr($_SERVER['HTTP_USER_AGENT'],'iphone') || strstr($_SERVER['HTTP_USER_AGENT'],'iphone') ) {
			$device = "iphone";
		} else if( stristr($_SERVER['HTTP_USER_AGENT'],'blackberry') ) {
			$device = "blackberry";
		} else if( stristr($_SERVER['HTTP_USER_AGENT'],'android') ) {
			$device = "android";
		}
 
		if( $device ) {
			return $device; 
		} return false; {
			return false;
		}
	}
}

The function will return one of the following values for you to work with in your code:

ipad
iphone
blackberry
android
unknown

Hopefully this helps someone else out there!

LOOKING FOR MORE DETAIL?

This is only the tip of the iceberg. If you’re looking for a detailed mobile detection script I suggest checking out the mobile device detect script provided by detectmobilebrowsers.mobi.

It provides a more detailed check that will include:

Windows Mobile Devices
Palm Mobiles
Opera Mini Devices
Amazon Kindle
Much more…

At the time this script was overkill for my needs, so I wrote the basic function above to provide a lean solution to suite my needs: A basic PHP function to check for major mobile devices.

RESOURCES

$iPod = stripos($_SERVER['HTTP_USER_AGENT'], "iPod");
$iPhone = stripos($_SERVER['HTTP_USER_AGENT'], "iPhone");
$iPad = stripos($_SERVER['HTTP_USER_AGENT'], "iPad");
$Android = stripos($_SERVER['HTTP_USER_AGENT'], "Android");

if($iPod || $iPhone || $iPad ){
$reDirectURL = "Location:";
$reDirectURL .= $URL_IPHONE;
}

else if($Android){
    $reDirectURL = "Location:";
    $reDirectURL .= $URL_ANDROID;
}