Rounding Something's Cost

<?php

function ceiling($number, $significance = 1000) {

$ratusan = $number % 1000;

$pembulatan_ratusan = ceil($ratusan / $significance) * $significance;

$ribuan = $number - $ratusan;

return $ratusan <= 500 ? $ribuan : $ribuan + $pembulatan_ratusan;

// return ( is_numeric($number) && is_numeric($significance) ) ? (ceil($number/$significance)*$significance) : false;

}

echo ceiling(12500, 1000);