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Problem
You want to automatically send a user to a new URL. For example,after successfully
saving form data, you want to redirect a user to a page that confirms the data.

Solution
Before any output is printed,use header() to send a Location header with the new
URL:
header('Location: http://www.example.com/');

Discussion
If you want to pass variables to the new page,you can include them in the query
string of the URL:
header('Location: http://www.example.com/?monkey=turtle');
The URL that you are redirecting a user to is retrieved with GET. You can’t redirect
someone to retrieve a URL via POST. You can,however,send other headers along
with the Location header. This is especially useful with the Window-target header,
which indicates a particular named frame or window in which to load the new URL:
header('Window-target: main');
header('Location: http://www.example.com/');
The redirect URL must include the protocol and hostname; it can’t just be a pathname:
// Good Redirect
header('Location: http://www.example.com/catalog/food/pemmican.php');
// Bad Redirect
header('Location: /catalog/food/pemmican.php');