<?php
$phoneDevices = array(
'iPhone' => '\biPhone.*Mobile|\biPod', // |\biTunes
'BlackBerry' => 'BlackBerry|\bBB10\b|rim[0-9]+',
'Nexus' => 'Nexus One|Nexus S|Galaxy.*Nexus|Android.*Nexus.*Mobile',
// @todo: Is 'Dell Streak' a tablet or a phone? ;)
'Dell' => 'Dell.*Streak|Dell.*Aero|Dell.*Venue|DELL.*Venue Pro|Dell Flash|Dell Smoke|Dell Mini 3iX|XCD28|XCD35|\b001DL\b|\b101DL\b|\bGS01\b',
'Samsung' => 'Samsung|SGH-I337|GT-S5350|GT-S5360|GT-S5363|GT-S5369|GT-S5380|GT-S5380D|GT-S5560|GT-S5570|GT-S5600|GT-S5603|GT-S5610|GT-S5620|GT-S5660|GT-S5670|GT-S5690|GT-S5750|GT-S5780|GT-S5830|GT-S5839',
'Sony' => 'SonyST|SonyLT|SonyEricsson|SonyEricssonLT15iv|LT18i|E10i|LT28h|SonyEricssonMT27i',
'Asus' => 'Asus.*Galaxy|PadFone.*Mobile',
);
$user_agent = "Mozilla/5.0 (Linux; U; Android 2.3.6; en-gb; GT-S5360 Build/GINGERBREAD) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1";
?>
How can I check $user_agent match Associative arrays and print the named keys