WordPress at a glance
function is not described

WP_REST_Request::get_query_params() public WP 4.4.0

Retrieves parameters from the query string.

These are the parameters you'd typically find in $_GET.

{} It's a method of the class: WP_REST_Request{}

No Hooks.

Return

Array. Parameter map of key to value

Usage

$WP_REST_Request = new WP_REST_Request();
$WP_REST_Request->get_query_params();

Changelog

Since 4.4.0 Introduced.

Code of WP_REST_Request::get_query_params() WP 5.5.2

<?php
public function get_query_params() {
	return $this->params['GET'];
}