class Solution {

    /**
     * @param String $version1
     * @param String $version2
     * @return Integer
     */
function compareVersion($versionA, $versionB) {
	//$verListA = str_split($versionA);
	//$verListB = str_split($versionB);
    $dm = '.';
    $verListA = explode($dm, (string)$versionA);
    $verListB = explode($dm, (string)$versionB);
	$len1 = count($verListA);
	$len2 = count($verListB);
//	echo $len1 . PHP_EOL;
//	echo $len2 . PHP_EOL;
	$max = max($len1, $len2);
	for ($i = 0; $i < $max; $i++) {
		$temp1 = 0;
		$temp2 = 0;
		if (i < $len1) {
			$temp1 = intval($verListA[$i]);
		}
		if (i < $len2) {
			$temp2 = intval($verListB[$i]);
		}
		if ($temp1 != $temp2) {
			return $temp1 > $temp2 ? 1 : -1;
		}
	}
	return 0;
}

}