if($data=$_GET['data']) {?

????echo "$data";

}else if($data=$_POST['data']){

????echo "$data";

}

if($data=$_GET['data']) {?

// echo "$data";

$sql="SELECT upwd FROM user WHERE uname='$data'";

$result=mysqli_query($conn,$sql);

if(!$result){echo "$sql";}

else{

$row=mysqli_fetch_assoc($result);

echo "$row[upwd]";

}

}else if($data=$_POST['data']){

echo "$data";

}