remove duplicate keys from a multidimensionnal array

Question

I have a multidimensionnal array of objects:

  0 => 
    array
      32281 => object ...
      105145 => object ...
      165656 => object ...
      194124 => object ...
      195397 => object ...
      205859 => object ...
  1 => 
    array
      32281 => object ...
      91504 => object ...
      165656 => object ...
      194124 => object ...
      195397 => object ...
      205859 => object ...
  3 => 
    array
      32281 => object ...
      105145 => object ...
      165656 => object ...
      194124 => object ...
      195397 => object ...
      205859 => object ...

and I want to remove duplicate arrays from this array like this (in this case I will remove 1 and just have 0 and 3 because 0 and 1 are the same) :

      0 => 
        array
          32281 => object ...
          105145 => object ...
          165656 => object ...
          194124 => object ...
          195397 => object ...
          205859 => object ...
      3 => 
        array
          32281 => object ...
          91504 => object ...
          165656 => object ...
          194124 => object ...
          195397 => object ...
          205859 => object ...

I have tried unsuccessfully a lot of things with array_unique, array_keys, array_keys_exists...

for example :

$array = array_map("unserialize", array_unique(array_map("serialize", $array)));

or

 $result = array();     
 foreach ($array as $key => $value) { 
    if(!array_key_exists($key,$result))
        $result[$key] = $array[$key]; 
  }

Answer 1

This function should do:

function my_unique($array) {
  foreach($array as $key => $value) {
    foreach($array as $key2 => $value2) {
      if($key != $key2 && $value === $value2) {
        unset($array[$key]);
      }
    }
  }
  return $array;
}