help with refer based redirect

[chrisl12341234]

I want everyone who comes to this page through aitank.com to be sent to Google and everyone else to be sent to Yahoo, but it just sends everyone to Google. Anyone know what's wrong?

<?php
$referer = getenv( "HTTP_REFERER" );

$tapps_referer = "http://www.aitank.com";

// referer check
if (isset($tapps_referer) && $tapps_referer!="")
{

if ($i=strpos($referer,"?"))
{
$referer= substr($referer,0,$i);
}
if ($tapps_referer != $referer)
{

header ("Location: http://www.google.com");

}
else
{
header ("Location: http://www.yahoo.com");
}

}
?>

[hmsnacker123]

What do you mean everyone else?

[chrisl12341234]

What do you mean everyone else?

Anyone who gets to the site through any other referrer that's not aitank.com. Like if they get to it through google.com for example.