📅  最后修改于: 2022-03-11 14:54:05.900000             🧑  作者: Mango
$start_y = 2020;
$start_m = 11;
$start_d = 23;
$date = $start_y . "-" . str_pad($start_m, 2, "0", STR_PAD_LEFT) . "-" . str_pad($start_d, 2, "0", STR_PAD_LEFT);