<?php


function version($oldVersion, $newVersion): bool
{
	$first = explode('.', $oldVersion);
	$end = explode('.', $newVersion);
	while (count($first) > 0) {
		$shift = (int)array_shift($first);
		$endShift = (int)array_shift($end);
		if ($endShift == $shift) {
			continue;
		}
		if ($endShift < $shift) {
			return true;
		} else {
			return false;
		}
	}
	return false;
}

var_dump(version('1.4.4','1.4.3'));