A Simple Branch please

[KevInKauai]

I have an existing web site to which I want to add code that invokves a sub-directory (for browsing from a mobile device). Here is the top of the existing "index.php" file:

Code: [Select]

<?php

session_start();

$title = '';
$sidebar = '';
$body = '';
$header = 'default';I am attempting to modify this to detect a "mobile browser" (from various examples that I have found here and there on the 'net) but I am having a fundamental PHP logic problem (apparently). Here's what I modified the top of the "index.php" file to:

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$mobile_browser = '0';
 
if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
    $mobile_browser++;
}with mode that finally ends like this:

Code: [Select]

if($mobile_browser>0) {
   // do something
   header('Location: mobi/index.html');

}
else {
   // do something else

session_start();ANy IDEAS? (Mahalo plenty ... KevInKauai)