Below is the code . i want do it using only one for loop.

Question

Below is the code . i want do it using only one for loop in PHP. Please help me how can i achieve it... Thanks

 

//Rewrite the code below so it would contain only one loop and only one iterational variable would be used.

$result = Array();

for ($x = 0; $x < 6; $x++){

   for ($y = 0; $y < 6; $y++){

      for ($z = 0; $z < 6; $z++){

         $result[$x][$y][$z] = $x * $y * $z;

      }

   }

}