Online PHP editor | refs for o3MlE

@ 2016-01-03T15:33:29Z

<?php

class A
{
    private static $instance;
    
    public static function getInstance()
    {
        if (null === $this->instance) {
            static::$instance = new self;
        }
        
        return static::instance;
    }
}

$a = A::getInstance();

var_dump($a);