$a = 12;
$b = 20;
$lmc = ($a > $b) ? $a : $b;
while(true)
{
if ($lmc % $a == 0 && $lmc % $b == 0)
{
echo "The LCM (Least Common Multiple) of " . $a . " and " . $b . " is: " . $lmc;
break;
}
$lmc++;
}
/*
run:
The LCM (Least Common Multiple) of 12 and 20 is: 60
*/