Refresh / re-direct using PHP

We know how to use Refresh Meta tags in our head tags. But what if we needed to do the same thing only this time do it in PHP?
We can use PHP's header() function

We can re-direct or refresh our web pages by simply doing either of the following in our PHP scripts
or codes:
Method I: using header('location...')

You probably know this ol' favourite...
php:




// refresh / re-direct without delay
// ---------------------------------
header( 'location:http://www.desilva.biz/webdsn/' );

?>


Method II: using header('refresh...')
php:




// refresh / redirect to an internal web page
// ------------------------------------------
header( 'refresh: 5; url=/webdsn/' );
echo '

You will be re-directed in 5 seconds...

';


// refresh / redirect to an internal web page
// ------------------------------------------
header( 'refresh: 3; url=/' ); # redirects to our homepage
echo '

You will be re-directed in 3 seconds...

';


// refresh / redirect to an external web page
// ------------------------------------------
header( 'refresh: 0; url=http://www.example.net' );
echo '

You won\'t know what hit you!

';
?>