Php vs Javascript

$y = -907076601;
$sum = 31853229228;
$k[0] = 1919967587;
$k[1] = 6382441;
$k[2] = 0;
$k[3] = 0;

$part1 = (($y<<4 ^ rshift($y,5))+$y);
$part2 =  ($sum+$k[rshift($sum,11) & 3]);
$part3 = ($part1) ^ ($part2);

$part1 = -2639407977
$part2 = 31853229228
$part3 = -359025492

y = -907076601;
sum = 31853229228;
k = [1919967587,6382441,0,0];

part1 = (y<<4 ^ y>>>5)+y;
part2 =  (sum+k[sum>>>11 & 3]);
part3 = (part1) ^ (part2);

part1 = -2639407977
part2 = 31853229228
part3 = 137650235