function getLMC($a, $b, $c) {
$lmc = max($a, $b, $c);
while(true) {
if ($lmc % $a == 0 && $lmc % $b == 0 && $lmc % $c == 0) {
return $lmc;
}
$lmc++;
}
}
$a = 12;
$b = 15;
$c = 40;
echo "The LCM (Least Common Multiple) is: " . getLMC($a, $b, $c);
/*
run:
The LCM (Least Common Multiple) is: 120
*/