How can browser settings, such as cache and cookies, impact the ability to view PHP scripts locally on a server?

Browser settings such as cache and cookies can impact the ability to view PHP scripts locally on a server by storing outdated versions of the scripts or interfering with the execution of the scripts. To resolve this issue, you can clear the browser cache and cookies to ensure that the latest version of the PHP scripts is being loaded.

// PHP code to clear browser cache and cookies
header("Cache-Control: no-cache, must-revalidate");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
setcookie("PHPSESSID", "", time()-3600, "/");