- floor: documentation ( source)
<?php
$cena = 175210;
$pogp = 50;
function my_round($arg, $base){
$ost = $arg%$base;
$chast = floor($arg/$base);
if($ost >= $base/2) $rez = ($chast+1) * $base;
else $rez = $chast * $base;
return $rez;
}
echo "cena $cena pogp $pogp " . my_round($cena, $pogp);
?>