how i use of header tag to redirect page in php

I want to redirect the page on the if condition.

this is my html page

    



    
    
Select Mode
    

   

   Selected Mode
   Online Payment
   Cash on Delevery
    
    

     
         

    

and this is my payment_mode.php page

$i= $_POST['selectmode'];

if($i>1)
    {
        header("Location : detail.php");


    }
else
    {
        header("Location : home.php");

    }

?>

bt it does not redirect the page detail.php and home.php

Answer

Try:

$i= $_POST['selectmode'];

if($i>1)
    {
        header("Location: detail.php");

        exit;

    }
else
    {
        header("Location : home.php");
        exit;

    }

Also, make sure on this page there is nothing being outputted before your calling the header() function.