<?php
class users implements ArrayAccess
{
   private $users;
   public function __construct()
   {
      $this->users = array();
   }
   public function offsetExists($key)
   {
      return isset($this->users[$key]);
   }
   public function offsetGet($key)
   {
      return $this->users[$key];
   }
   public function offsetSet($key, $value)
   {
      $this->users[$key] = $value;
   }
   public function offsetUnset($key)
   {
      unset($this->users[$key]);
   }
}
$users = new users();
$users['afif']="mayflower@phpxperts.net";
$users['hasin']="hasin@pageflakes.com";
$users['ayesha']="florence@phpxperts.net";
echo $users['afif']
?>
