wp_is_jsonp_request(): bool

1905function wp_is_jsonp_request() {1906	if ( ! isset( $_GET['_jsonp'] ) ) {1907		return false;1908	}1909 1910	if ( ! function_exists( 'wp_check_jsonp_callback' ) ) {1911		require_once ABSPATH . WPINC . '/functions.php';1912	}1913 1914	$jsonp_callback = $_GET['_jsonp'];1915	if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) {1916		return false;1917	}1918 1919	/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */1920	$jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true );1921 1922	return $jsonp_enabled;1923}