What potential issues or errors can arise when trying to implement a URL redirect using PHP include statements?

When implementing a URL redirect using PHP include statements, a potential issue that can arise is that the redirect may not work as expected due to output being sent before the redirect header is set. To solve this issue, ensure that no output is sent before setting the redirect header. 

<?php
ob_start(); // Start output buffering
include 'redirect.php'; // Include file with redirect logic
ob_end_clean(); // Clean (erase) the output buffer
header('Location: new_page.php'); // Set the redirect header
exit(); // Ensure no further code is executed after the redirect
?>

Keywords

PHP URL redirect include statement error handling header redirection

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