合并或组合两个数组 - 仅当指定的 id 存在时
我想合并两个数组，但我不知道哪种方法对我来说是正确的（array_merge、array_combine、array_unique）。
第一个数组：
Array
(
[0] => Array
(
[id_person] => 194
[firstname] => Jesper
[lastname] => Hansen
[pos] => 29
[position] => 1
[starter] => 0
[subs] => 0
[goal] => 0
[yellow_card] =>
[red_card] =>
)
[1] => Array
(
[id_person] => 195
[firstname] => Mikkel
[lastname] => Andersen
[pos] => 1
[position] => 1
[starter] => 1
[subs] => 0
[goal] => 0
[yellow_card] =>
[red_card] =>
)
[2] => Array
(
[id_person] => 197
[firstname] => Alexander
[lastname] => Scholz
[pos] => 6
[position] => 2
[starter] => 1
[subs] => 0
[goal] => 0
[yellow_card] =>
[red_card] =>
)
[3] => Array
(
[id_person] => 198
[firstname] => Erik
[lastname] => Sviatchenko
[pos] => 10
[position] => 2
[starter] => 1
[subs] => 0
[goal] => 0
[yellow_card] =>
[red_card] =>
)
[4] => Array
(
[id_person] => 199
[firstname] => Kian
[lastname] => Hansen
[pos] => 14
[position] => 2
[starter] => 1
[subs] => 0
[goal] => 0
[yellow_card] =>
[red_card] =>
)
[5] => Array
(
[id_person] => 204
[firstname] => Manjrekar
[lastname] => James
[pos] => 30
[position] => 2
[starter] => 0
[subs] => 0
[goal] => 0
[yellow_card] =>
[red_card] =>
)
牛魔王的故事2回答
-
慕婉清6462132
如果我正确理解您的要求，那么 您可以在 的帮助下完成foreach()，array_search()如下array_column()所示，foreach($second_array as $k=>$v){ $id_person = $v['id_person']; $key = array_search($id_person, array_column($first_array, 'id_person')); if($key){ $second_array[$k]['starter'] = $first_array[$key]['starter']; $second_array[$k]['subs'] = $first_array[$key]['subs']; $second_array[$k]['yellow_card'] = $first_array[$key]['yellow_card']; $second_array[$k]['red_card'] = $first_array[$key]['red_card']; }}print_r($second_array); 或者使用array_merge()而不是 4 行。foreach($second_array as $k=>$v){ $id_person = $v['id_person']; $key = array_search($id_person, array_column($first_array, 'id_person')); if($key){ array_merge($second_array[$k],['starter'=>$first_array[$key]['starter'],'subs'=>$first_array[$key]['subs'],'yellow_card'=>$first_array[$key]['yellow_card'],'red_card'=>$first_array[$key]['red_card']]); }}print_r($second_array); 工作演示： https: //3v4l.org/FeanU -
蝴蝶不菲
这是解决问题的另一种方法：/* Go through both arrays and put the person_id as key in each array (e.g. [0]['person_id'] = 197 TO [197]['person_id'] etc)*/foreach($first_array as $key=>$item) { $first_array[$item['id_person']] = $item; unset($first_array[$key]); //remove current item}foreach($second_array as $key=>$item) { $second_array[$item['id_person']] = $item; unset($second_array[$key]); //remove current item}/* Go through second array. If first array contains the same person_id the key for person_id exists, that's why we can use isset() here*/foreach($second_array as $key=>$item) { if (isset($first_array[$key])) { //Just copy the part that you intented from first array //to this $second_array $second_array[$key]['starter'] = $first_array[$key]['starter']; $second_array[$key]['subs'] = $first_array[$key]['subs']; $second_array[$key]['goal'] = $first_array[$key]['goal']; $second_array[$key]['yellow_card'] = $first_array[$key]['yellow_card']; $second_array[$key]['red_card'] = $first_array[$key]['red_card']; }}这将导致：Array( [195] => Array ( [id_person] => 195 [position] => 1 [first] => Mikkel [last] => Andersen [id_club] => 2 [type] => 2 [captain] => 0 [pos] => 1 [subsmin_in] => [subsmin_out] => [starter] => 1 [subs] => 0 [goal] => 3 [yellow_card] => 2 [red_card] => ) [236] => Array ( [id_person] => 236 [position] => 14 [first] => Sebastian [last] => Buch [id_club] => 2 [type] => 2 [captain] => 0 [pos] => 14 [subsmin_in] => [subsmin_out] => [starter] => 0 [subs] => 0 [goal] => 0 [yellow_card] => [red_card] => ) [209] => Array ( [id_person] => 209 [position] => 3 [first] => Joel [last] => Andersson [id_club] => 2 [type] => 2 [captain] => 0 [pos] => 18 [subsmin_in] => [subsmin_out] => [starter] => 1 [subs] => 0 [goal] => 0 [yellow_card] => [red_card] => ))如果您希望索引从零开始，您可以这样做：$second_array = array_values($second_array);你将拥有：Array( [0] => Array ( [id_person] => 195 [position] => 1 [first] => Mikkel [last] => Andersen [id_club] => 2 [type] => 2 [captain] => 0 [pos] => 1 [subsmin_in] => [subsmin_out] => [starter] => 1 [subs] => 0 [goal] => 3 [yellow_card] => 2 [red_card] => ) [1] => Array ( [id_person] => 236 [position] => 14 [first] => Sebastian [last] => Buch [id_club] => 2 [type] => 2 [captain] => 0 [pos] => 14 [subsmin_in] => [subsmin_out] => [starter] => 0 [subs] => 0 [goal] => 0 [yellow_card] => [red_card] => ) [2] => Array ( [id_person] => 209 [position] => 3 [first] => Joel [last] => Andersson [id_club] => 2 [type] => 2 [captain] => 0 [pos] => 18 [subsmin_in] => [subsmin_out] => [starter] => 1 [subs] => 0 [goal] => 0 [yellow_card] => [red_card] => ))笔记！为了测试目的，我更改了一些值。
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