How can the timing of cookie activation affect its functionality in PHP?

The timing of cookie activation in PHP can affect its functionality if the cookie is set after any output has been sent to the browser. This can lead to errors or the cookie not being set properly. To ensure proper functionality, cookies should be set before any output is sent, typically at the beginning of the script. 

<?php
// Set cookie before any output
setcookie("user", "John Doe", time() + 3600, "/");
?>

Keywords

cookie activation timing functionality PHP session management

Related Questions