CODEWITHSUNDEEP
phparraysmultidimensional-arrayassociative-array
PHPLover
PHPLover

Reputation: 13005

How to create an associative array in following case?

I'm having few arrays as follows. Actually I'm having too many such arrays but for your reference I've printed only few of them:

Array
(
    [0] => lineItemData
    [1] => name
)
Array
(
    [0] => lineItemData
    [1] => startDate
)
Array
(
    [0] => lineItemData
    [1] => endDate
)
Array
(
    [0] => lineItemData
    [1] => frequencyCapping
    [2] => interval
)
Array
(
    [0] => lineItemData
    [1] => frequencyCapping
    [2] => amount
)
Array
(
    [0] => orderId
)
Array
(
    [0] => isExternal
)

Now you can observe in man of the above arrays key value [lineItemData] is common and it is present at oth index. Now I want to create a new array where the key would be [lineItemData] and other arrays which don't have a value [lineItemData] present within themselves should be new keys and other keys should be keys under every key. My question may confuse you. So I'm printing below the desired output array 

Array
(
    [lineItemData] => Array
        (
            [name] => 
            [startDate] => 
            [endDate] =>
            [frequencyCapping] => Array
            (
                [interval] => 
                [amount] => 
            )   

        )
    [orderId] => 
    [isExternal] => 

)

Upvotes: 1

Views: 60

Answers (2)

Alma Do
Alma Do

Reputation: 37365

You can do this with:

$data = [
   ['lineItemData', 'name'],
   ['lineItemData', 'startDate'],
   ['lineItemData', 'endDate'],
   ['lineItemData', 'frequencyCapping', 'interval'],
   ['lineItemData', 'frequencyCapping', 'amount'],
   ['orderId'],
   ['isExternal']
];

$result  = [];
$pointer = &$result;

foreach($data as $keys)
{
   foreach($keys as $key)
   {
      if(is_array($pointer) && !array_key_exists($key, $pointer))
      {
         $pointer[$key] = null;
      }
      $pointer = &$pointer[$key];
   }
   $pointer = &$result;
}

End result will look like:

array(3) {
  ["lineItemData"]=>
  array(4) {
    ["name"]=>
    NULL
    ["startDate"]=>
    NULL
    ["endDate"]=>
    NULL
    ["frequencyCapping"]=>
    array(2) {
      ["interval"]=>
      NULL
      ["amount"]=>
      NULL
    }
  }
  ["orderId"]=>
  NULL
  ["isExternal"]=>
  NULL
}

Upvotes: 2

Ahmed Sagarwala
Ahmed Sagarwala

Reputation: 410

Maybe like so?

    <?php
    $super['lineItemData']['name'] = NULL;
    $super['lineItemData']['startDate'] = NULL;
    $super['lineItemData']['endDate'] = NULL;
    $super['lineItemData']['frequencyCapping']['interval'] = NULL;
    $super['lineItemData']['frequencyCapping']['amount'] = NULL;
    $super['orderId'] = NULL; 
    $super['isExternal'] = NULL; ?>

I'm sure someone will get crafty and find a way to make this happen in one array statement. I like this because it's easier for me to manage.

Upvotes: 0

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