所以我有一個 Laravel 控制器，它正在拉入 2 個陣列。
陣列 1：
[
{
"id":1,
"created_at":null,
"updated_at":null,
"name":"The Darkroom",
"description":"This is the room your parents warned you about",
"image":"https:\/\/images.unsplash.com\/photo-1579662908513-50e1433a258a?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1234&q=80",
"is_private":"0"
},{
"id":2,
"created_at":null,
"updated_at":null,
"name":"Smoking & Cigars",
"description":"Time to light up and enjoy a cigar!",
"image":"https:\/\/images.unsplash.com\/photo-1617850136763-06bc0a9a089c?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2000&q=80",
"is_private":"0"
},{
"id":3,
"created_at":null,
"updated_at":null,
"name":"Humiliation",
"description":"today is the day you are going to be exposed",
"image":"https:\/\/images.unsplash.com\/photo-1571570261702-3d23956fa32e?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=2600&q=80",
"is_private":"1"
},{
"id":4,
"created_at":null,
"updated_at":null,
"name":"Financial Domination",
"description":"hand over your cash and say thank you Sir!",
"image":"https:\/\/images.unsplash.com\/photo-1526304640581-d334cdbbf45e?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=2200&q=80",
"is_private":"0"
},{"id":5,"created_at":null,"updated_at":null,"name":"Pups & Handlers","description":"Woof, woof, bark, sit","image":"https:\/\/images.unsplash.com\/photo-1506939754500-f27bc71fccd4?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=2200&q=80","is_private":"1"}]
陣列 2：
{"channels":{"presence-chat.1":{"user_count":1},"presence-chat.4":{"user_count":1}}}
最終陣列應如下所示：
[
{
"id":1
"other data in the first array"
"user_count": 1
}
]
我需要在控制器內部做的是將資料合并到一個陣列中。所以理想情況下，取第二個陣列，將 chat.ID 與第一個陣列的 ID 相匹配，然后將 user_count 添加到其中......你明白我的意思了。
我以前從未這樣做過，所以我不知道如何最好地做到這一點。任何幫助將永遠不勝感激！
uj5u.com熱心網友回復：
你能澄清陣列的結構嗎？目前尚不清楚嵌套關系是什么。理想情況下，您可以粘貼 PHP 片段嗎？例如：
$arr1 = [
[
'id' => 1,
'name' => 'Bob'
]
];
這將有助于獲得一個好的答案。
uj5u.com熱心網友回復：
在這里，這假設presence-chat.4意味著 id 為 4 的頻道：
<?php
$json1 = '[{"id":1,"created_at":null,"updated_at":null,"name":"The Darkroom","description":"This is the room your parents warned you about","image":"https:\/\/images.unsplash.com\/photo-1579662908513-50e1433a258a?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1234&q=80","is_private":"0"},{"id":2,"created_at":null,"updated_at":null,"name":"Smoking & Cigars","description":"Time to light up and enjoy a cigar!","image":"https:\/\/images.unsplash.com\/photo-1617850136763-06bc0a9a089c?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2000&q=80","is_private":"0"},{"id":3,"created_at":null,"updated_at":null,"name":"Humiliation","description":"today is the day you are going to be exposed","image":"https:\/\/images.unsplash.com\/photo-1571570261702-3d23956fa32e?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=2600&q=80","is_private":"1"},{"id":4,"created_at":null,"updated_at":null,"name":"Financial Domination","description":"hand over your cash and say thank you Sir!","image":"https:\/\/images.unsplash.com\/photo-1526304640581-d334cdbbf45e?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=2200&q=80","is_private":"0"},{"id":5,"created_at":null,"updated_at":null,"name":"Pups & Handlers","description":"Woof, woof, bark, sit","image":"https:\/\/images.unsplash.com\/photo-1506939754500-f27bc71fccd4?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=2200&q=80","is_private":"1"}]';
$json2 = '{"channels":{"presence-chat.1":{"user_count":1},"presence-chat.4":{"user_count":1}}}';
// convert the json into php arrays
$array1 = json_decode($json1, true);
$array2 = json_decode($json2, true);
// we extract the user_counts from the second array
// and make the index of a new array the channel id with value user_count
$channel_counts = [];
foreach ($array2['channels'] as $chan_name => $count) {
$channel_id = explode('.', $chan_name)[1];
$user_count = $count['user_count'];
$channel_counts[$channel_id] = $user_count;
}
// we pass this array by reference as we are modifying it
foreach ($array1 as &$channel) {
$id = $channel['id'];
if (isset($channel_counts[$id]))
$channel['user_count'] = $channel_counts[$id];
else
$channel['user_count'] = 0;
}
unset($channel);
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