The scope resolution operator :: (aka in Hebrew as Paamayim Nekudotayim or the double colon) is explicitly used to access static, constant and overridden properties and methods of a class. The class required is defined to the left of the :: operator and the member to the right.

Syntax:

className::memberName ;

<?php
	class Bike {
		public $name;
		public function setName($myName) {
			$this->name = $myName;
		}
		public function greet() {
			echo "Welcome to the Ducati appreciation club!<br>";
		}
		public function speak() {
			echo "The latest Ducati road going sports bike is the $this->name.<br><br>";
		}
	}
	class MotoGP extends Bike {
		private $prototype;

		public function setPrototype($myPrototype) {
			$this->prototype = $myPrototype;
		}
		public function greet() {
			echo "Welcome Ducati MotoGP supporters!<br>";
		}
		public function speak() {
			echo Bike::greet();
			echo $this->greet();
			echo "The $this->prototype is the MotoGP prototype racing equivalent of their road bike.<br><br>";
		}
	}
	Bike::greet();
	$panigale = new Bike;
	echo "The above shows a class method being called without an object instance.<br><br>";
	$panigale->setName("Panigale");
	$panigale->speak();

	$desmodici = new MotoGP;
	$desmodici->setPrototype("Desmodici");
	$desmodici->speak();
	MotoGP::greet();
?>

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