Static

<?php
	error_reporting(E_ALL);
	ini_set('display_errors', 'On');
	class HabbonlineMySQL {
		public $hello = "HelloWorld!";
	}
	class Habbonline {
		static public function mysql()
		{
			static $mysql;
			$mysql = new HabbonlineMySQL;
			return $mysql;
		}
	
	}
	$class = new Habbonline;
	$mysql = $class->mysql();
	echo $mysql->hello;
?>

<?php
	error_reporting(E_ALL);
	ini_set('display_errors', 'On');
	class HabbonlineMySQL {
		public $hello = "HelloWorld!";
	}
	class Habbonline {
		static public function mysql()
		{
			static $mysql;
			$mysql = new HabbonlineMySQL;
			return $mysql;
		}
 
	}
	$class = new Habbonline;
	$mysql = $class->mysql();
	echo $mysql->hello;
?>