2

I found many question and answer about this, but not match what i need. i think it's similar/same to this question but don't know why not working for this case. So please try before judging duplicates, thank you.

array source

$avar = array(
0 => array(1,2,3,4,5,6,7,8,9),
1 => array(10,11,12,13,14,15,16,17,7,8,9,10),
23 => array(21,22,23,4,5,6,7,11,12,13,14,15,21));

desired result

$avar = array(
0 => array(1,2,3,4,5,6,7,8,9),
1 => array(10,11,12,13,14,15,16,17),
23 => array(21,22,23));

PHP script

<?php
function super_unique($array)
{
  $result = array_map("unserialize", array_unique(array_map("serialize", $array)));

  foreach ($result as $key => $value)
  {
    if ( is_array($value) )
    {
      $result[$key] = super_unique($value);
    }
  }

  return $result;
}

$result = super_unique($avar);  
echo "<pre>";
print_r($result);

?>

similar question with answer but not solve my case:

  1. How to remove duplicate values from a multi-dimensional array in PHP
  2. PHP remove duplicate values from multidimensional array

Thank you all

Improve this question
2
  • are the array keys (0,1,23) fixed? Commented May 15, 2013 at 1:50
  • No, it's dynamic. pulling from table ID Commented May 15, 2013 at 1:54

1 Answer 1

Reset to default
3 
$seen = array();
foreach($avar as &$entry){
    $entry = array_unique(array_diff($entry,$seen));
    $seen = array_merge($entry,$seen);
}
unset($entry);
var_dump($avar);
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1 Comment

Just wanted to post exactly the same! :)

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