note 89729 added to function.array-unique

florian at box dot net is right, having an array of arrays does not work right out of the box, but using json makes it hard for previous php versions to work. Using a simple serialize is very easy: <?php $parent = array(); $son1 = array('a' => 1, 'b' => 2); $son2 = array('c' => 3, 'd' => 4); $son3 = array('a' => 5, 'd' => 4); // Fill our array, doesn't matter how, but serialize your input for ($j = 0; $j < 6; $j++){ $parent[] = serialize($son1); $parent[] = serialize($son2); $parent[] = serialize($son3); } var_dump($parent); var_dump(array_unique($parent)); ?> This will print: array(18) { [0]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [1]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [2]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" [3]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [4]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [5]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" [6]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [7]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [8]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" [9]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [10]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [11]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" [12]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [13]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [14]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" [15]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [16]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [17]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" } array(3) { [0]=> string(30) "a:2:{s:1:"a";i:1;s:1:"b";i:2;}" [1]=> string(30) "a:2:{s:1:"c";i:3;s:1:"d";i:4;}" [2]=> string(30) "a:2:{s:1:"a";i:5;s:1:"d";i:4;}" } And just unserialize it :) NOTE: Of course (un)serializing large amounts of data will bring the performance problems associated, so is up to you to decide. ---- Server IP: 69.147.83.197 Probable Submitter: 201.144.39.83 ---- Manual Page -- http://www.php.net/manual/en/function.array-unique.php Edit -- https://master.php.net/note/edit/89729 Del: integrated -- https://master.php.net/note/delete/89729/integrated Del: useless -- https://master.php.net/note/delete/89729/useless Del: bad code -- https://master.php.net/note/delete/89729/bad+code Del: spam -- https://master.php.net/note/delete/89729/spam Del: non-english -- https://master.php.net/note/delete/89729/non-english Del: in docs -- https://master.php.net/note/delete/89729/in+docs Del: other reasons-- https://master.php.net/note/delete/89729 Reject -- https://master.php.net/note/reject/89729 Search -- https://master.php.net/manage/user-notes.php