What are common pitfalls when implementing page redirects in PHP websites?

Common pitfalls when implementing page redirects in PHP websites include forgetting to use the `header()` function before any output is sent to the browser, not using `exit()` or `die()` after the redirect header, and not specifying the full URL in the `header()` function. To solve these issues, always make sure to call the `header()` function before any content is output to the browser, use `exit()` or `die()` immediately after the `header()` function, and specify the full URL in the `header()` function like `header("Location: http://www.example.com/new_page.php");`.

<?php
// Correct way to implement a page redirect in PHP
header("Location: http://www.example.com/new_page.php");
exit();
?>