如果是当前时间，请立即返回

from datetime import datetime
current_time = datetime.now()
print(current_time)

const current_time = new Date();
console.log(current_time);

import java.time.LocalDateTime;
public class Main {
    public static void main(String[] args) {
        LocalDateTime current_time = LocalDateTime.now();
        System.out.println(current_time);
    }
}

using System;
class Program {
    static void Main() {
        DateTime current_time = DateTime.Now;
        Console.WriteLine(current_time);
    }
}

$current_time = date('Y-m-d H:i:s');
echo $current_time;