<?php
$cooking = [
["menu_id" => 40,"menu_name" => "お好み焼き","submenu_name" => "鰹節","drink" => "ハイボール"],
["menu_id" => 20,"menu_name" => "カレー","submenu_name" => "ライス","drink" => "烏龍茶"],
["menu_id" => 99,"menu_name" => "パスタ","submenu_name" => "タバスコ","drink" => "ビール"],
["menu_id" => 10,"menu_name" => "焼き肉","submenu_name" => "ソース","drink" => "ジンジャエール"],
["menu_id" => 30,"menu_name" => "寿司","submenu_name" => "醤油","drink" => "緑茶"],
["menu_id" => 50,"menu_name" => "サンドイッチ","submenu_name" => "ラー油","drink" => "紅茶"]
];
$add = [
0 => [ 'id' => 10, 'age' => '1995年06月08日'],
1 => [ 'id' => 20, 'age' => '2009年05月23日'],
2 => [ 'id' => 30, 'age' => '2006年08月26日'],
3 => [ 'id' => 40, 'age' => '1993年02月24日']
];
$add = array_column($add, 'age', 'id');
foreach($cooking as $list ){
if(!empty($add[$list['menu_id']])){
$result[] = $list + ['age' => $add[$list['menu_id']]];
}
};
var_dump($result);
結果
array(4) {
[0]=>
array(5) {
["menu_id"]=>
int(40)
["menu_name"]=>
string(15) "お好み焼き"
["submenu_name"]=>
string(6) "鰹節"
["drink"]=>
string(15) "ハイボール"
["age"]=>
string(17) "1993年02月24日"
}
[1]=>
array(5) {
["menu_id"]=>
int(20)
["menu_name"]=>
string(9) "カレー"
["submenu_name"]=>
string(9) "ライス"
["drink"]=>
string(9) "烏龍茶"
["age"]=>
string(17) "2009年05月23日"
}
[2]=>
array(5) {
["menu_id"]=>
int(10)
["menu_name"]=>
string(9) "焼き肉"
["submenu_name"]=>
string(9) "ソース"
["drink"]=>
string(21) "ジンジャエール"
["age"]=>
string(17) "1995年06月08日"
}
[3]=>
array(5) {
["menu_id"]=>
int(30)
["menu_name"]=>
string(6) "寿司"
["submenu_name"]=>
string(6) "醤油"
["drink"]=>
string(6) "緑茶"
["age"]=>
string(17) "2006年08月26日"
}
}