PHP库函数将多维数组合并为一个基于键的数组？ [重复]
问题描述：
This question already has an answer here:
I got two arrays that I would like to combine based on "client_id" key (using PHP function is preferable) :
[all_client] => Array
(
[0] => Array
(
[client_id] => 1
[client_name] => Thomas Berg
[client_phone] => 12313123
[client_email] => aaaa@aaa.com
)
[1] => Array
(
[client_id] => 2
[client_name] => John Doe
[client_phone] => 4231241
[client_email] => asdas@asdas.com
)
)
[all_client_document] => Array
(
[0] => Array
(
[client_document_id] => 3
[client_document_number] => BX100
[client_document_type] => passport
[client_document_issued_date] => 2018-10-17
[client_document_expired_date] => 2018-12-02
[client_id] => 1
)
[1] => Array
(
[client_document_id] => 4
[client_document_number] => DJ200
[client_document_type] => passport
[client_document_issued_date] => 2018-10-15
[client_document_expired_date] => 2018-11-23
[client_id] => 2
)
)
)
How to merge these two array? Any PHP function to achieve this without foreach looping? I would hope to see the result as below :
[new_result] => Array
(
[0] => Array
(
[client_id] => 1
[client_name] => Thomas Berg
[client_phone] => 12313123
[client_email] => aaaa@aaa.com
[client_document_id] => 3
[client_document_number] => BX100
[client_document_type] => passport
[client_document_issued_date] => 2018-10-17
[client_document_expired_date] => 2018-12-02
)
[1] => Array
(
[client_id] => 2
[client_name] => John Doe
[client_phone] => 4231241
[client_email] => asdas@asdas.com
[client_document_id] => 4
[client_document_number] => DJ200
[client_document_type] => passport
[client_document_issued_date] => 2018-10-15
[client_document_expired_date] => 2018-11-23
)
)
How can I achieve this? Any help is much appreciated. Thanks in advanced before!
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答
I found the answer based on the same question :
$first = array_column($data['all_client'], null, 'client_id');
$second = array_column($data['all_client_document'], null, 'client_id');
$result = array_values(array_replace_recursive($first, $second));
It reproduces as what I want also and simpler, thanks anyone!
答
You can achieve this by using array_map() function:
function make_my_data($a, $b)
{
return array_merge($a,$b);
}
$a = [
0 => [
'user_id' => 1,
'user_name' => "Ram",
],
1 => [
'user_id' => 2,
'user_name' => "Raj",
]
];
$b = [
0 => [
'user_id' => 1,
'user_emai' => "ram@abc.com",
],
1 => [
'user_id' => 2,
'user_email' => "raj@abc.com",
]
];
$d = array_map("make_my_data", $a , $b);
echo "<pre>"; print_r($d);
Output:
Array
(
[0] => Array
(
[user_id] => 1
[user_name] => Ram
[user_emai] => ram@abc.com
)
[1] => Array
(
[user_id] => 2
[user_name] => Raj
[user_email] => raj@abc.com
)
)