将字符转换为日期的函数

from datetime import datetime

date_str = "2022-01-01"
date_obj = datetime.strptime(date_str, "%Y-%m-%d")
print(date_obj)

var dateString = "2022-01-01";
var dateObj = new Date(dateString);
console.log(dateObj);

import java.text.SimpleDateFormat;
import java.util.Date;

String dateString = "2022-01-01";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date date = format.parse(dateString);
System.out.println(date);

$dateString = "2022-01-01";
$dateObj = date_create_from_format("Y-m-d", $dateString);
echo date_format($dateObj, "Y-m-d");