What are some alternative methods to $_GET[] for accessing parameters in PHP scripts embedded in web pages?

When embedding PHP scripts in web pages, using $_GET[] to access parameters may not always be the most secure or efficient method. An alternative approach is to use filter_input() function with INPUT_GET as the filter type to access GET parameters. This function provides a more secure way to retrieve input data from various sources, including GET parameters, by applying filters to sanitize and validate the input.

$parameter = filter_input(INPUT_GET, 'parameter_name', FILTER_SANITIZE_STRING);