Question

php 一个三维数组，把值相同的合并，并把其它值累加

Array
(
[0] => Array
(
[0] => Array
(
[idc_name_list] => 韩国电信
[start_time] => 2014-09-04 12:10
[end_time] => 2014-09-04 12:10
[online_down] => 0
)
)

[1] => Array
(
[0] => Array
(
[idc_name_list] => 首都在线云
[online_down] => 23
[start_time] => 2014-11-20 17:49
[end_time] => 2014-11-20 17:49
)

)

[2] => Array
(
[0] => Array
(
[idc_name_list] => 电信通苏州桥
[online_down] => 153
[start_time] => 2014-07-23 14:50
[end_time] => 2014-07-31 14:50
)

)

[4] => Array
(
[0] => Array
(
[idc_name_list] => 电信通苏州桥
[online_down] => 200
[start_time] => 2014-08-02 11:08
[end_time] => 2014-08-02 13:08
)

)

)

Answer 1

$arr=array
(
    0 => array
        (
            0 => array
                (
                    'idc_name_list' => '韩国电信',
                    'start_time' => '2014-09-04 12:10',
                    'end_time' => '2014-09-04 12:10',
                    'online_down' => 0
                )
        ),
      
      1 => Array
        (
            0 => array
                (
                    'idc_name_list' => '首都在线云',
                    'online_down' => 23,
                    'start_time' => '2014-11-20 17:49',
                    'end_time' => '2014-11-20 17:49'
                )

        ),

    2 => array
        (
            0 => Array
                (
                    'idc_name_list' => '电信通苏州桥',
                    'online_down' => 153,
                    'start_time' => '2014-07-23 14:50',
                    'end_time' => '2014-07-31 14:50'
                )

        ),

    4 => Array
        (
            0 => Array
                (
                    'idc_name_list' => '电信通苏州桥',
                    'online_down' => 200,
                    'start_time' => '2014-08-02 11:08',
                    'end_time' => '2014-08-02 13:08'
                )

        )
);
$item=array();
foreach($arr as $key=>$value){
    foreach($value as $k=>$v){
        if(!isset($item[$v['idc_name_list']])){
            $item[$v['idc_name_list']]=$v;
        }else{
            $item[$v['idc_name_list']]['online_down'].=','.$v['online_down'];
            $item[$v['idc_name_list']]['start_time'].=','.$v['start_time'];
            $item[$v['idc_name_list']]['end_time'].=','.$v['end_time'];
        }
    }
}
print_r($item);

Answer 2

1. s

Answer 3

1、使用 array_walk

2、用foreach遍历呗。

追问

怎么用？新手，遍历了半天把自己绕晕了