singelton.php

singelton.php

<?php
class KMMSDKConfig {
   protected static $_instance = null;
   public $cookie_lifetime = -1;

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

   protected function __clone() {}
   protected function __construct() {}
 }

KMMSDKConfig::getInstance()->cookie_lifetime=123;
echo KMMSDKConfig::getInstance()->cookie_lifetime;
?>