この状態でPOSTした場合
![74583fbb13c81e5de17f45a420aee970](https://cloud.githubusercontent.com/assets/7111591/2968030/f9da3128-db39-11e3-9515-723b4c1cea9b.png)

`print_r($_SESSION);`すると
```
Array ( 
    [family_name] => ○○ 
    [given_name] => ×× 
    [sex] => 女性 
    [postalcode] => Array ( [0] => 000 [1] => 0000 ) 
    [prefecture] => 東京都 
    [email] => xxxxx@xxxx-xxxx.com 
    [hobby] => Array ( [1] => 音楽鑑賞 [2] => 映画鑑賞 [3] => [4] => yeah ) 
    [comment] => yeah 
    [errormsg] => Array ( ) 
)
```