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<?php $items = array(array(1 => 1), array(2 => 2), array(1 => 1)); $items = array_map('unserialize', array_unique(array_map('serialize', $items))); var_dump($items);
based on JdAAq
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(1) { [1]=> int(1) } [1]=> array(1) { [2]=> int(2) } }