Online PHP editor | refs for G83mL

<?php $fake_categories = [ [ 'handle' => 'food', 'nice_name' => 'Food' ], [ 'handle' => 'travel', 'nice_name' => 'Travel' ], [ 'handle' => 'fashion', 'nice_name' => 'Fashion' ], [ 'handle' => 'food', 'nice_name' => 'Food1' ] ]; //$unique = array_unique($fake_categories, SORT_REGULAR); $unique = array_values(array_column($fake_categories, null, 'handle')); print_r($unique);