What are the potential issues with using outdated PHP superglobals like $HTTP_GET_VARS instead of newer ones like $_GET?

Using outdated PHP superglobals like $HTTP_GET_VARS can lead to security vulnerabilities and compatibility issues with newer versions of PHP. It is recommended to use newer superglobals like $_GET, which are more secure and widely supported. To fix this issue, simply replace all instances of $HTTP_GET_VARS with $_GET in your code.

// Fix outdated PHP superglobals
// Before
$value = $HTTP_GET_VARS['key'];

// After
$value = $_GET['key'];