What role does the header() function play in PHP and how can it be utilized for page redirection within a script?

The header() function in PHP is used to send a raw HTTP header to the client. It is commonly used for page redirection within a script by sending a "Location" header with the desired URL. This can be useful for redirecting users after form submissions, authentication, or any other scenario where a page needs to be redirected programmatically. 

<?php
// Redirect to a new page after 3 seconds
header("Refresh: 3; url=destination_page.php");
exit;
?>

Keywords

header function PHP page redirection script utilization

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