연관배열 + extract()

<?php
 
$user = array('id' => "janggom",
'name'=> '안수정',
'addr'=> '대구',
'phone' => 'xxx-xxxx');
 
$user[id] = 'sujeong';
$user['id'] = 'ansu';
$user["id"] = 'stal';
 
extract($user);
 
echo $id, $name, $addr, $phone;    
 
  ?>