Singleton Pattern in PHP

singleton.php

<?php
/**
 * PHP Singleton pattern (same as Java singleton).
 *
 * Analytics::incrementView(this); // Within the photo class for example.
 */
class Analytics
{
  private static $instance;

  private function __construct() { }

  public static function inst() {
    if (!self::$instance) {
      self::$instance = new self();
    }

    return self::$instance;
  }

  public function incrementView($obj) 
  {
    // Take the object and increment the views for just this object.
  }

  public function saveIncrementedViews() 
  {
    // Do all the saves in one go.
  }
}
?>