- round: documentation ( source)
- ini_set: documentation ( source)
<?php
ini_set('precision', 8);
$c = 0;
for($a=0;$a<999999.99;$a+=0.01) {
for($b=0;$b<999999.99;$b+=0.01) {
// mind I don't need to test comparision (round($a-$b,2) == ($a-$b))
echo ($a + $b).','.($a - $b)." vs ";
echo round($a + $b,2).','.round($a - $b,2)."<br/>";
if($c++ > 4000) die;
}
}
?>