PHP中获取我的城市列表,通过排序,通过AZ的循环!数列出相同的首字母结果!,放到一个以AZ为key的数组里面去,再返回我要的结果!

$city = Array
            (
                 Array
                    (
                        'city_id' =>  "1",
                        'city_name' =>  "全国",
                        'ename' =>  "QuanGuo",
                        'letter' =>  "Q",
                        'city_content' => "ADSFADSFA",
                        'order_desc' => "1",
                        'display' => "1",
                        'short_description' => "ADSFADF",
                        'keyword' => 'AF,ASDF,ADF',
                        'create_name' =>"", 
                        'create_time' => ""
                    ),             
                Array
                    (
                        'city_id' =>  "9",
                        'city_name' =>  "台州",
                        'ename' =>  "TaiZhou",
                        'letter' =>  "T",
                        'city_content' =>  "AAAA",
                        'order_desc' =>  "AAA",
                        'display' =>  "1",
                        'short_description' =>  "AAA",
                        'keyword' =>  "AAA",
                        'create_name' =>  "xiaozi",
                        'create_time' => "1310525878"
                    ),             
                Array
                    (
                        'city_id' =>  "10",
                        'city_name' =>  "杭州",
                        'ename' =>  "hangzhou",
                        'letter' =>  "H",
                        'city_content' =>  "asdf",
                        'order_desc' => "2",
                        'display' =>  "1",
                        'short_description' =>  "sdfa",
                        'keyword' =>  "s",
                        'create_name' =>  "xiaozi",
                        'create_time' =>  "1310526071"
                    ),             
                Array
                    (
                        'city_id' =>  "11",
                        'city_name' =>  "ASDFASDFADSF",
                        'ename' =>  "ASDFASDFASDF",
                        'letter' =>  "T",
                        'city_content' =>  "222ss",
                        'order_desc' =>  "22",
                        'display' =>  "1",
                        'short_description' =>  "22",
                        'keyword' =>  "ss",
                        'create_name' =>  "zongzi",
                        'create_time' =>  "1310701443"
                    )             
            )

　//处理上面的数组　

//获取所有城市,整排        
        static public function get_all_city($city)
        {
            if (is_array($city))
            {
                for ($i=A;$i<=Z;$i++)
                {                                    
                    foreach ($city as $k=>$vo)
                    {                        
                        if ($i == $vo['letter'])
                        {
                            $array[$i][$k] = $vo;
                        }
                    }    
                    
                    if($i == Z)
                    {
                        break;
                    }
                }
            }            
            return $array;
        }

　$city = get_all_city($city);

Array
(
    [H] => Array
        (
            [2] => Array
                (
                    [city_id] => 10
                    [city_name] => 杭州
                    [ename] => hangzhou
                    [letter] => H
                    [city_content] => asdf
                    [order_desc] => 2
                    [display] => 1
                    [short_description] => sdfa
                    [keyword] => s
                    [create_name] => xiaozi
                    [create_time] => 1310526071
                )
 
        )
 
    [Q] => Array
        (
            [0] => Array
                (
                    [city_id] => 1
                    [city_name] => 全国
                    [ename] => QuanGuo
                    [letter] => Q
                    [city_content] => ADSFADSFA
                    [order_desc] => 1
                    [display] => 1
                    [short_description] => ADSFADF
                    [keyword] => AF,ASDF,ADF,
                    [create_name] => 
                    [create_time] => 
                )
 
        )
 
    [T] => Array
        (
            [1] => Array
                (
                    [city_id] => 9
                    [city_name] => 台州
                    [ename] => TaiZhou
                    [letter] => T
                    [city_content] => AAAA
                    [order_desc] => AAA
                    [display] => 1
                    [short_description] => AAA
                    [keyword] => AAA
                    [create_name] => xiaozi
                    [create_time] => 1310525878
                )
 
            [3] => Array
                (
                    [city_id] => 11
                    [city_name] => ASDFASDFADSF
                    [ename] => ASDFASDFASDF
                    [letter] => T
                    [city_content] => 222ss
                    [order_desc] => 22
                    [display] => 1
                    [short_description] => 22
                    [keyword] => ss
                    [create_name] => zongzi
                    [create_time] => 1310701443
                )
 
        )
 
)

得到了我想要的!