Status.php

<?php

class Status
{
    const YES = 'yes';
    const NO = 'no';
    const MAYBE = 'maybe';
    
    private static $instances = array();
    
    private $status;
    
    public function __construct($status)
    {
        $this->status = $status;
    }
    
    public function getInstance($status)
    {
        if (!isset(self::$instances[$status])) {
            self::$instances[$status] = new Satus($status);
        }
        
        return self::$instances[$status];
    }
}