Singleton Pattern Example #php #design-patterns #singleton-pattern

singleton-pattern.php

<?php

class Singleton
{
    private static $instance;

    public static function getInstance()
    {
        if (static::$instance === null) {
            static::$instance = new static();
        }
        return static::$instance;
    }

    public static function setInstance($instance)
    {
        return static::$instance = $instance;
    }

    public function test()
    {
        printf("Success!\n");
    }
}

$singleton = Singleton::getInstance();
$singleton->test();