I have an associative array containing entries that are virtually the same, except the key-value pairs are swapped:

```
[
    [
        "partnerA" => "Alice",
        "partnerB" => "Alfred"
    ],
    [
        "partnerA" => "Alfred",
        "partnerB" => "Alice"
    ],
    [
        "partnerA" => "Alfred",
        "partnerB" => "Brandon"
    ]
]

```

I stored the array in a Laravel `collection` and tried using `->unique()`

```
  $partners = collect($array)->unique();

```

but the output matches the array feeding in.

How can I remove duplicates like this from an array so each pair is unique no matter if the keys are swapped?

The desired output is:

```
[
    [
        "partnerA" => "Alice",
        "partnerB" => "Alfred"
    ],
    [
        "partnerA" => "Alfred",
        "partnerB" => "Brandon"
    ]
]

```

Update: What I've tried so far that seems to be working...

```
$size = sizeof($partners);
for($i = 0; $i <= $size; $i++){
    $match = $partners[$i];
    $needle = ["partnerA" => $match["partnerB"], "partnerB" => $match["partnerA"]];

    if(in_array($needle, $partners)){
        unset($partners[$i]);
    }
}

```