Search into multidimensional array and change value of one key - php

Question

I have one json request which contain multiple array:
{
"user_type": "2",
"user_id": "57",
"client_detail": [
{
"server_user_id": "1",
........
........
"is_active": "1",
"client_local_id": "11"
},
{
"server_user_id": "2",
........
........
"is_active": "1",
"client_local_id": "12"
}
],
}
Using above request I change data into database. then return data from DB. but i have to pass client_local_id into response.
so suppose i got 3 result from DB then i have to return client_local_id(this field is not stored in DB, there is no need for that) with them. so i pass default client_local_id 0.
exa:
"client_detail": [
{
"server_user_id": "1",
........
........
"is_active": "1",
"client_local_id": 0
},
{
"server_user_id": "2",
........
........
"is_active": "1",
"client_local_id": 0
},
{
"server_user_id": "3",
........
........
"is_active": "1",
"client_local_id": 0
},
]
then using below code i change value of client_local_id.
$response = array('client_detail' => $dbvalue);
/* Change Client Local ID */
if(sizeof($client_detail_data)>0)
{
foreach($client_detail_data as $key=>$resclient_data) // loop of request
{
foreach($response['client_detail'] as $key1=>$res_client) //loop of response
{
//if id is match then change value
if($res_client['server_user_id']==$resclient_data['server_user_id'])
{
$response['client_detail'][$key1]['client_local_id'] = $resclient_data['client_local_id'];
}
}
}
}
But i think there is easy method, to do that. I have a multiple array in request so i don't want to use too much foreach loop. so how to solve it in proper way?
Thanks in advance.

Answer 1

First of all let’s map server_user_ids to client_user_ids:
$s2c = array();
foreach($resclient_data as $item) {
$s2c[$item['server_user_id']] = $item['client_user_id'];
}
Now we can use array_map directly on $response:
$response['client_detail'] = array_map(function($elem) use($s2c) {
$elem['client_local_id'] = $s2c[$elem['server_local_id']];
return $elem;
}, $response['client_detail']);
I diidn’t test the code, but hopefully the idea is clear.