Online PHP editor | refs for 6f1ku

<?php $input = [['color'=>'#000000','size'=>'L','count'=>2], ['color'=>'#000000','size'=>'XL','count'=>1], ['color'=>'#ffffff','size'=>'L','count'=>2], ['color'=>'#ffffff','size'=>'XL','count'=>1], ['color'=>'#ff0000','size'=>'L','count'=>1]]; $colors = []; foreach ($input as $product) { extract($product); $colors[$color][$size] = $count; } $output = []; foreach ($colors as $color => $sizes) { $data = []; foreach ($sizes as $size => $count) { $data[] = ['value' => $size, 'count' => $count]; } if (count($data) == 1) { $output[] = ['color' => $color, 'size' => $data[0]['value'], 'count' => $data[0]['count']]; } else { $output[] = ['color' => $color, 'size' => $data]; } } echo json_encode($output, JSON_PRETTY_PRINT);