What are the implications of using GET method in PHP when RegisterGlobals is turned off?

When RegisterGlobals is turned off in PHP, using the GET method can lead to security vulnerabilities as it allows user input to be directly accessed as global variables. To solve this issue, you should use superglobal arrays like $_GET to retrieve data from the query string instead of relying on automatically registered global variables.

// Example of retrieving data from the query string using $_GET
$variable = isset($_GET['variable']) ? $_GET['variable'] : '';