What is the purpose of using PHP header redirection and what are the potential pitfalls associated with it?

When using PHP header redirection, the purpose is to redirect the user to a different page or URL. This can be useful for handling form submissions, authentication, and other scenarios where you need to redirect the user to a different location. However, it's important to note that header redirection must be done before any output is sent to the browser, otherwise, you may encounter "headers already sent" errors. 

<?php
// Perform any necessary checks or processing here

// Redirect the user to a different page
header("Location: https://www.example.com/newpage.php");
exit;
?>

Keywords

PHP header redirection potential pitfalls security vulnerability cache-control

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