php更新数组值

您可以通过以下代码实现:

$array1 = array("Jan" => "0", "Feb" => "0", "Mar" => "0", "Apr" => "0");

$array2 = array("Jan" => "2", "Mar" => "3");

$array3 = array_replace($array1, $array2);
print_r($array3);