What are the potential drawbacks of setting cookies mid-script in PHP?

Setting cookies mid-script in PHP can cause issues because headers must be sent before any output is generated. If you try to set a cookie after output has already been sent to the browser, you will encounter an error. To solve this issue, you should set cookies before any output is sent, typically at the very beginning of your script.

<?php
// Set cookies at the beginning of the script
setcookie("cookie_name", "cookie_value", time() + 3600, "/");
?>