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@ 2014-08-02T06:15:16Z

<?php

$array = array ('1' => (object)array(
            'id' => 225,
            'user_id' => 1,
            'name' => 'Blue Quilted Leather Jacket by Minusey - $499'

        ),
        '2' => (object)array(
                'id' => 222,
                'user_id' => 1,
                'name' => 'Darling New Bathtub by Duravit - $6300'

        ),
        '3' => (object)array(
                'id' => 222,
                'user_id' => 1,
                'name' => 'Darling New Bathtub by Duravit - $6300'

        )                   
  ); 
//print_r(array_column((array)$array, 'id'));
$UniqueArray = array();
    foreach($array as $key=>$value){   // rebuild your array    
        //$id = $value['id']; //build array with unique key value
        $id = $value->id; //object
        $UniqueArray[$id] = $value;
    }

   print_r($UniqueArray);

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Array ( [225] => stdClass Object ( [id] => 225 [user_id] => 1 [name] => Blue Quilted Leather Jacket by Minusey - $499 ) [222] => stdClass Object ( [id] => 222 [user_id] => 1 [name] => Darling New Bathtub by Duravit - $6300 ) )

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276.52 ms | 406 KiB | 456 Q