将两个数组合并为一个，相应地合并数据

Question

Having these two arrays with exactly the same number of items (3) and respectively correspondent data, how can I merge them to one unique array, combining the data like I show in array 3 example

// array 1
[ ▼ 3 items
  {
    "email": "john-doe@example.tld"
  },
  {
    "email": "joe-bloggs@example.tld"
  },
  {
    "email": "foo-bar@example.tld"
  }
]

// array 2
[ ▼ 3 items
  {
    "name": "John Doe"
  },
  {
    "name": "Joe Bloggs"
  },
  {
    "name": "Foo Bar"
  }
]

How can I merge them to be like this:

// array 3
[ ▼ 3 items
  {
    "name": "John Doe",
    "email": "john-doe@example.tld"
  },
  {
    "name": "Joe Bloggs",
    "email": "joe-bloggs@example.tld"
  },
  {
    "name": "Foo Bar",
    "email": "foo-bar@example.tld"
  }
]

I am using laravel php. I have tried array_merge($array1, $array2) and some laravel's function $res = $array1->merge($array2); but I can't get the result I want.

Answer 1

array_merge doesn't combines the elements, it just concatenates the arrays to each other.

You can use array_map() to call array_merge() on each pair of elements:

$result = array_map('array_merge', $array1, $array2);

Answer 2

Use combine() method of laravel

$collection = collect(['name', 'email']);
for($i=0;$i<count($array1);$i++){
$combined[] = $collection->combine([$array2[$i],$array1[$i]]);
}
$combined->all();

or just use collection

$collection = collect($array1, $array2);

Answer 3

I don't know how your input data looks like so I had to make a few assumptions. The idea is to loop through all emails, take their position in the emails array, and use that position to define what the name would be in the names array.

$emails = [
    ["email" => "john-doe@example.tld"], 
    ["email" => "joe-bloggs@example.tld"], 
    ["email" => "foo-bar@example.tld"]
];

$names = [
    ["name" => "John Doe"],
    ["name" => "Joe Bloggs"],
    ["name" => "Foo Bar"]
];

$names_and_emails = [];

foreach ($emails as $key => $email) {
    $names_and_emails[] = ["email" => $email['email'], "name" => $names[$key]['name']];
}

var_dump($names_and_emails);

Output:

array(3) {
  [0]=>
  array(2) {
    ["email"]=>
    string(20) "john-doe@example.tld"
    ["name"]=>
    string(8) "John Doe"
  }
  [1]=>
  array(2) {
    ["email"]=>
    string(22) "joe-bloggs@example.tld"
    ["name"]=>
    string(10) "Joe Bloggs"
  }
  [2]=>
  array(2) {
    ["email"]=>
    string(19) "foo-bar@example.tld"
    ["name"]=>
    string(7) "Foo Bar"
  }
}

Hope this helps.