Question

I have the following function that I wrote

 function range_gen($num1,$num2){


    $exp = explode('.',$num1);

    $accuracy = strlen($exp[1]);

    $dp = array(
    0=>1,
    1=>0.1,
    2=>0.01,
    3=>0.001,
    4=>0.0001);


    foreach ($dp as $key=>$acc)
    {
      if ($accuracy ==$key){
        $step = $acc;
      }
    }


      foreach (range($num1, $num2 ,$step) as $number) {
          $ans.= "\"".$number."\",";
      }
        echo trim($ans,",");
    }

If I give it two values eg 20.49 and 20.51 then the result is 20.49,20.5,20.51

How can I get the 20.5 to be 20.50?

Thanks
Rob

Answer 1

You don’t “get” 20.5 because php will automatically truncate trailing decimal 0’s. But, when you print the number with echo, you can format it:

echo number_format($number, 2);

In your loop, this could be done like this:

You can have something like this:

foreach (range($num1, $num2 ,$step) as $number) {
      $ans.= "\"".number_format($number,2)."\",";
  }