En son hali

$path = "http://".$_SERVER['SERVER_NAME']."/";
if(empty($_REQUEST['do'])) {

$iphone = strpos($_SERVER['HTTP_USER_AGENT'],"iPhone");
$android = strpos($_SERVER['HTTP_USER_AGENT'],"Android");
$webos = strpos($_SERVER['HTTP_USER_AGENT'],"webOS");
$bberry = strpos($_SERVER['HTTP_USER_AGENT'],"BlackBerry");
$ipod = strpos($_SERVER['HTTP_USER_AGENT'],"iPod");
if ($iphone || $android || $webos || $ipod || $bberry == true)
{
$path .= "index.php?do=mobil";
echo implode(file($path));
} else {
$path .= "index.php?do=anasayfa";
echo implode(file($path));
}

}elseif($_REQUEST['do'] == 'mobil'){
$path .= "index.php?do=mobil_sayfa";
echo implode(file($path));

}elseif($_REQUEST['do'] == 'anasayfa'){
$path .= "index.php?do=ana_sayfa";
echo implode(file($path));
}



if($_REQUEST['do']=='mobil_sayfa')
{
echo "mobil_sayfa içerik";

}

if($_REQUEST['do']=='ana_sayfa')
{
echo "ana_sayfa içerik";

}