PHP数组按要求合并

Question

数组一:

[0] => Array
    (
        [rid] => 1
        [hf_rid] => 0
        [aid] => 1
        [uid] => 1
        [content] => 我肯定第一名
        [re_time] => 2017-10-10 10:59
        [nickname] => 就是这么帅
    )

[1] => Array
    (
        [rid] => 2
        [hf_rid] => 0
        [aid] => 1
        [uid] => 1
        [content] => 马蛋,中枪了
        [re_time] => 2017-10-10 01:10
        [nickname] => 说定的唉

    )
    

数组二:

[0] => Array
    (
        [rid] => 3
        [hf_rid] => 1
        [aid] => 1
        [uid] => 1
        [content] => 我肯定第一名
        [re_time] => 2017-10-10 10:59
        [nickname] => 就是这么帅
    )

[1] => Array
    (
        [rid] => 4
        [hf_rid] => 2
        [aid] => 1
        [uid] => 1
        [content] => 马蛋,中枪了
        [re_time] => 2017-10-10 01:10
        [nickname] => 说定的唉
    )
    
[2] => Array
(
    [rid] => 5
    [hf_rid] => 2
    [aid] => 1
    [uid] => 1
    [content] => ssd发的发的服务
    [re_time] => 2017-10-10 01:10
    [nickname] => 说定的唉
)

    
    

我想把他们合并起来!~具体合并要求是这样的: 如果数组二的hf_rid字段等于数组一的 rid 字段,那么合并的效果是这样的

       
       
           [0] => Array
    (
        [rid] => 1
        [hf_rid] => 0
        [aid] => 1
        [uid] => 1
        [content] => 我肯定第一名
        [re_time] => 2017-10-10 10:59
        [nickname] => 就是这么帅
        [xxxxx]=> Array
                    (
                        [rid] => 3
                        [hf_rid] => 1
                        [aid] => 1
                        [uid] => 1
                        [content] => 我肯定第一名
                        [re_time] => 2017-10-10 10:59
                        [nickname] => 就是这么帅
            
                    )
    )
        [1] => Array
    (
        [rid] => 2
        [hf_rid] => 0
        [aid] => 1
        [uid] => 1
        [content] => 马蛋,中枪了
        [re_time] => 2017-10-10 01:10
        [nickname] => 说定的唉
        [xxxxx]=> Array
    (
            [0]=>array

                    (
                        [rid] => 4
                        [hf_rid] => 2
                        [aid] => 1
                        [uid] => 1
                        [content] => 马蛋,中枪了
                        [re_time] => 2017-10-10 01:10
                        [nickname] => 说定的唉
            
                    )
            [1] => Array
(
                        [rid] => 5
                        [hf_rid] => 2
                        [aid] => 1
                        [uid] => 1
                        [content] => ssd发的发的服务
                        [re_time] => 2017-10-10 01:10
                        [nickname] => 说定的唉
                    )

    )
        )

求大神们伸出援助之手啊!!!阿门!!

Answer 1

foreach($aArr1 as &$aV1) { foreach($aArr2 as $aV2) { if($aV2['hf_rid'] == $aV1['rid']) { $aV1['new'][] = $aV2; } } } 结果 Array ( [0] => Array ( [rid] => 1 [hf_rid] => 0 [aid] => 1 [uid] => 1 [content] => 我肯定第一名 [re_time] => 2017-10-10 10:59 [nickname] => 就是这么帅 [new] => Array ( [0] => Array ( [rid] => 3 [hf_rid] => 1 [aid] => 1 [uid] => 1 [content] => 我肯定第一名 [re_time] => 2017-10-10 10:59 [nickname] => 就是这么帅 ) ) ) [1] => Array ( [rid] => 2 [hf_rid] => 0 [aid] => 1 [uid] => 1 [content] => 马蛋,中枪了 [re_time] => 2017-10-10 01:10 [nickname] => 说定的唉 [new] => Array ( [0] => Array ( [rid] => 4 [hf_rid] => 2 [aid] => 1 [uid] => 1 [content] => 马蛋,中枪了 [re_time] => 2017-10-10 01:10 [nickname] => 说定的唉 ) [1] => Array ( [rid] => 5 [hf_rid] => 2 [aid] => 1 [uid] => 1 [content] => ssd发的发的服务 [re_time] => 2017-10-10 01:10 [nickname] => 说定的唉 ) ) ) )

Answer 2

foreach($arr_1 as $key=>$val){ foreach($arr_2 as $v){ if($v['hf_rid'] == $val['rid']){ $arr_1['xxx'] = $v; } } }

Answer 3

不好意思,(新的new数组应该是有序数组,它会有N多hf_rid=rid的)

Answer 4

$arr1 = [ [ 'rid' => 1, 'hf_rid' => 0, 'aid' => 1, 'uid' => 1, 'content' => '我肯定第一名', 're_time' => '2017-10-10 10:59', 'nickname' => '就是这么帅', ], [ 'rid' => 2, 'hf_rid' => 0, 'aid' => 1, 'uid' => 1, 'content' => '马蛋,中枪了', 're_time' => '2017-10-10 01:10', 'nickname' => '说定的唉', ], ]; $arr2 = [ [ 'rid' => 3, 'hf_rid' => 1, 'aid' => 1, 'uid' => 1, 'content' => '我肯定第一名', 're_time' => '2017-10-10 10:59', 'nickname' => '就是这么帅', ], [ 'rid' => 4, 'hf_rid' => 2, 'aid' => 1, 'uid' => 1, 'content' => '马蛋,中枪了', 're_time' => '2017-10-10 01:10', 'nickname' => '说定的唉', ], [ 'rid' => 5, 'hf_rid' => 2, 'aid' => 1, 'uid' => 1, 'content' => 'ssd发的发的服务', 're_time' => '2017-10-10 01:10', 'nickname' => '说定的唉', ], ]; $new_arr = []; # 如果数组二的hf_rid字段等于数组一的 rid foreach ($arr1 as $item => $value) { foreach ($arr2 as $n => $m) { if ($arr1[$item]['rid'] == $arr2[$n]['hf_rid']) { $arr1[$item]['xxxx'][] = $m; $new_arr = $arr1; } } }