PHP Round Full Up and Full Down

Round_Full_Up_Down.php

<?php
/*
  ----------------------------------------------------------
  FULL ROUND UP and DOWN
  Boris Anthony .net - 2016-01-01

  Fully agreed with this statement:
    "In my opinion PHP's ROUND() function lacks two flags:
    - PHP_ROUND_UP - Always round up.
    - PHP_ROUND_DOWN - Always round down.
    It's often necessary to always round up, or down to varying positions."

  Inspired and based on comments from PHP Documentation:
  http://php.net/manual/en/function.round.php

  Particularily:
  http://php.net/manual/en/function.round.php#114573
  and
  http://php.net/manual/en/function.round.php#115605
  ----------------------------------------------------------
*/

function round_up($value, $places)
{
  $mult = pow(10, abs($places));
  return $places < 0 ?
    ceil($value / $mult) * $mult :
      ceil($value * $mult) / $mult;
}
function round_down($value, $places)
{
  $mult = pow(10, abs($places));
  return $places < 0 ?
    floor($value / $mult) * $mult :
      floor($value * $mult) / $mult;
}

// Pretty Print examples --------------------------
echo "<pre>";
// Round Up examples
echo round_up(12345.234, 2)."\n"; // 12345.24
echo round_up(12345.234, 1)."\n"; // 12345.3
echo round_up(12345.234, 0)."\n"; // 12346
echo round_up(12345.234, -1)."\n"; // 12350
echo round_up(12345.234, -2)."\n"; // 12400
echo round_up(12345.234, -3)."\n"; // 13000
echo round_up(12345.234, -4)."\n\n"; // 20000

// Round Down examples
echo round_down(12345.234, 2)."\n"; // 12345.23
echo round_down(12345.234, 1)."\n"; // 12345.2
echo round_down(12345.234, 0)."\n"; // 12345
echo round_down(12345.234, -1)."\n"; // 12340
echo round_down(12345.234, -2)."\n"; // 12300
echo round_down(12345.234, -3)."\n"; // 12000
echo round_down(12345.234, -4)."\n"; // 10000

echo "</pre>";

?>