How can I get this array without it printing the name of the 2nd dimension?-CodePudding

I have a 3d array:

{
    "code": num,
    "payload": [
        {
            "2nd array": [
                {
                    "msg": "some message",
                    "val": "some val"
                }
            ]
        }
    ]
}

I need to print it without the 2nd array value so, like this:

{
  "code": num,
  "payload": [
    {
      "msg": "some msg"
    }
  ]
}

Here's how I make the array:

foreach ($orig_array as $arr) {
                        $res[$i]["2nd array"][] = array(
                            "msg" => $arr["some_message"],
                            "val"       => $arr["some_value"],
                        );
}

Is there a simple way to do this that I'm not seeing? I have tried to flatten the array or loop through it before sending the response, but I can't get it into that shape.

EDIT:

I thought of removing just the 2nd array, but I can't change that because it's not my code, it's legacy, and it would break many other things.

CodePudding user response：

#just to get the data from your example, the payload
$args = '[
        {
            "2nd array": [
                {
                    "msg": "some message",
                    "val": "some val"
                }
            ]
        },
        {
            "2nd array": [
                {
                    "msg": "some message",
                    "val": "some val"
                }
            ]
        }
    ]';
$arr = json_decode($args,true);

#that is what you can do in 1 line
$arr = array_merge(...array_map(fn($a) => $a['2nd array'] ,$arr));

#then use $arr in the response
var_export($arr);

EDIT: Switched to array_map version

CodePudding user response：


$arr = '{
    "code": 1,
    "payload": [
        {
            "2nd array": [
                {
                    "msg": "some message",
                    "val": "some val"
                }
            ]
        },
        {
            "2nd array": [
                {
                    "msg": "some message",
                    "val": "some val"
                }
            ]
        }
    ]
}';



$arr = json_decode($arr,true);

$new_arr = [];
foreach($arr['payload'] as $key => $inside){
    foreach($inside as $n => $val ) {
    $new_arr[] = current($val);
    unset($arr['payload'][$key]);
    }
    
    
}
$arr['payload'] = $new_arr;
print_r($arr);