记一次PHP实现JS的无符号右移(>>>)

5>>>2

function uright($a, $n){ ???$c = 2147483647 >> ($n - 1); ???return $c & ($a >> $n);}uright(5,2);

function uint32val($var) { ???if (is_string($var)) { ???????if (PHP_INT_MAX > 2147483647) { ???????????$var = intval($var); ???????} else { ???????????$var = floatval($var); ???????} ???} ???if (!is_int($var)) { ???????$var = intval($var); ???} ???if ((0 > $var) || ($var > 4294967295)) { ???????$var &= 4294967295; ???????if (0 > $var) { ???????????$var = sprintf(‘%u‘, $var); ???????} ???} ???return $var;}