$numbers[$j+1]) { $temporary = $numbers[$j]; $numbers[$j] = $numbers[$j+1]; $numbers[$j+1] = $temporary; } } } $smallest = $numbers[0]; $highest = $numbers[$lenthArray - 1]; return "The smallest number is " . $smallest . " and the highest is " . $highest . PHP_EOL; } echo solutions([64, 34, 25, 12, 22, 11, 90]); echo solutions([6,37,2,100,27,18,3,98,1,74,89,923]);