$agent=strtolower($agent=strtolower(_SERVER['HTTP_USER_AGENT']); 
$iphone=(strpos(iphone=(strpos($agent, 'iphone')) ? true : false; 
$ipad=(strpos($ipad=(strpos($agent, 'ipad')) ? true : false; 
$android=(strpos(android=(strpos($agent, 'android')) ? true : false; 
if($iphone || $iphone || $ipad)
{
　　echo "<script>window.location.href='https://itunes.apple.com/cn/app/wu-han-de-tie-gong-e/id663196252?mt=8'</script>";
} 
if($android){
　　echo "<script>window.location.href='http://www.lewanau.com'</script>";
}