#47642 [Opn]: array_unique() does not work with multidimensional arrays

ID: 47642 Updated by: iliaa@php.net Reported By: djungowski at chip dot de Status: Open -Bug Type: Arrays related +Bug Type: Documentation problem Operating System: * PHP Version: 5.2.9 New Comment: The array_unique() was never intended to work with multi-dimensional arrays. Previous Comments: ------------------------------------------------------------------------ [2009-03-13 10:56:00] djungowski at chip dot de Description: ------------ array_unique does not work, when it comes to multidimensional arrays. I've posted the behaviour + a workaround here: http://www.phpdevblog.net/2009/01/using-array-unique-with-multidimensional-arrays.html#comment505 I've also found the (older) bug report #12789, where Jeroen says that array_unique is not supposed to work with multidimensional arrays. If this is so, you should at least mention it in the documentation (see the older bug report! James says the same thing) Reproduce code: --------------- $array = array( array( 'id' => 123, 'name' => 'Some Product', 'ean' => '1234567890123' ), array( 'id' => 123, 'name' => 'Some Product', 'ean' => '4852950174938' ), array( 'id' => 123, 'name' => 'Some Product', 'ean' => '1234567890123' ), ); $uniqueArray = array_unique($array); var_dump($uniqueArray); Expected result: ---------------- array(2) { [0]=> array(3) { ["id"]=> int(123) ["name"]=> string(12) "Some Product" ["ean"]=> string(13) "1234567890123" } [1]=> array(3) { ["id"]=> int(123) ["name"]=> string(12) "Some Product" ["ean"]=> string(13) "4852950174938" } } Actual result: -------------- array(1) { [0]=> array(3) { ["id"]=> int(123) ["name"]=> string(12) "Some Product" ["ean"]=> string(13) "1234567890123" } } ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=47642&edit=1