How can using header functions impact PHP page behavior?

Using header functions in PHP can impact page behavior by allowing you to send HTTP headers to the browser before any other output. This is important for redirecting users to different pages, setting cookies, and controlling caching behavior. It is crucial to use header functions before any other output is sent to the browser to avoid errors. 

<?php
// Set a 301 redirect header to redirect users to a different page
header("HTTP/1.1 301 Moved Permanently");
header("Location: https://www.example.com/newpage.php");
exit();
?>

Keywords

header functions PHP page behavior HTTP headers redirection

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