2次元配列をソートする方法

二次元配列をソートするにはどうすればよいですか?
配列
(
[0] => 配列
(
[userid] => [username] => [RealName] = & GT; エンタープライズ開発
                                                                                                                                                                                                                                  ​ [部門名] = & gt; )

[1] => 配列
(
[userid] => [username] => [RealName] =＆gt;                                                                                                                                                                                                                                                             [部門名] = & gt; 17c
                                                                                                                                                                                                                              ​ )

[2] => 配列
(
[userid] => [username] =＆gt; [RealName] =＆gt; [性別] = & gt;
[部門名] = & gt; テスト部門
[ismanager] =＆gt; )

[3] => 配列
(
[userid] => [username] =＆gt; [本名] = & GT;
                                                                                                                                                                                                                                                            [部門名] = & gt; テスト部門
[ismanager] =＆gt; )

[4] => 配列
(
[userid] => [username] => [本名] = & gt;
                                                                                                                                                                                                                                                            [部門名] = & gt; テスト部門
)

)
isCreatorを先頭、次にisManager=1を最後に、最後に一般ユーザーの順にランク付けしたいのですが、アドバイスをお願いします。ありがとうございます

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