//week
$time1 = mktime(0, 0, 0, date("m"), date("d") - date("w") + 1, date("Y"));
$time2 = mktime(23, 59, 59, date("m"), date("d") - date("w") + 7, date("Y"));
//month
$time1 = mktime(0, 0, 0, date('n'), 1, date('Y'));
$time2 = mktime(0, 0, 0, date('n'), date('t'), date('Y'));
;