ControllerUsuario

//ControllerUsuario
<?php
include_once '../model/ModelUsuario.php';
class ControllerUsuario
{

    public function ControllerInsertarUsuario($idtar,$nom,$ape,$niv,$usu,$cla,$tiptar,$numtar,$fecven,$ccv,$saldo){
        try{
            $obj=new ModelUsuario();
            $obj->ModelInsertarUsuario($idtar,$nom,$ape,$niv,$usu,$cla,$tiptar,$numtar,$fecven,$ccv,$saldo);
            header("Location:../view/registro.php?valor=1");
        }catch(Exception $e){
            throw $e;
        }
    }
    public function ControllerValidarUsuario($usu,$cla){
        try{
            $obj=new ModelUsuario();
            return $obj->ModelValidarUsuario($usu,$cla);
     }catch(Exception $e){
         throw $e;
     }
    }
    public function ControllerObtenerUsuario($user, $pass){
        try{
            $obj=new ModelUsuario();
            return $obj->ModelObtenerUsuario($user, $pass);
            header("Location:../view/principal.php");
     }catch(Exception $e){
         throw $e;
     }
    }
    public function ControllerModificarUsuario($id,$numt,$fec,$ccv,$rec){
        try{
            $obj=new ModelUsuario();
            $obj->ModelModificarUsuario($id,$numt,$fec,$ccv,$rec);
            header("Location:../view/principal.php");
        }catch(Exception $e){
            throw $e;
        }
    }
}

if(isset($_POST["grabar"])){
    $obj = new ControllerUsuario();

    $idtar  =   $_POST["txtcodtarlimapass"];
    $nom    =   $_POST["txtnomcom"];
    $ape    =   $_POST["txtape"];
    $niv    =   2;
    $usu    =   $_POST["txtnomusu"];
    $cla    =   $_POST["txtpass"];
    if(isset($_REQUEST["cbocategoria"])){
        $tiptar = $_REQUEST["cbocategoria"];
        echo $tiptar."<br>";
    }
    $tiptar =   $_POST["cbocategoria"];
    $numtar =   $_POST["txtnumtar"];
    $fecven =   $_POST["txtfec"];
    $ccv    =   $_POST["txtccv"];
    $saldo  =   0;

    $obj->ControllerInsertarUsuario($idtar,$nom,$ape,$niv,$usu,$cla,$tiptar,$numtar,$fecven,$ccv,$saldo);
}
if(isset($_POST["Recargar"])){
    $obj = new ControllerUsuario();

    $id     =   $_POST["txtnumid"];
    $numt   =   $_POST["txtnumtar"];
    $fec    =   $_POST["txtfecha"];
    $ccv    =   $_POST["txtccv"];
    $saldo  =   $_POST["txtsaldo"];
    $rec    =   $_POST["txtmonto"] + $saldo;


    $obj->ControllerModificarUsuario($id,$numt,$fec,$ccv,$rec);
}
?>