Online PHP editor | refs for TFvKZ

<?php $array = [ ['id' => 1, 'category' => 'Pizza', 'product' => 'Large Pizza', 'complement_type' => 'Bread', 'option' => 'Brown bread'], ['id' => 2, 'category' => 'Pizza', 'product' => 'Small Pizza', 'complement_type' => 'Bread', 'option' => 'White bread'], ['id' => 3, 'category' => 'Pizza', 'product' => 'Small Pizza', 'complement_type' => 'Ingredients', 'option' => 'Olives'], ['id' => 4, 'category' => 'Salads', 'product' => 'Green Salad', 'complement_type' => 'Extras', 'option' => 'Bacon'], ['id' => 5, 'category' => 'Salads', 'product' => 'Cesars Salad', 'complement_type' => 'Extras', 'option' => 'Lettuce'], ]; $result = []; foreach ($array as ['category' => $c, 'product' => $p, 'complement_type' => $t, 'option' => $result[$c][$p][$t]]); var_export($result);