Let's talk about the conversion between timestamp and year, month and day in php

PHP is a very popular server-side scripting language that is widely used to develop and maintain websites. During website development, it is often necessary to convert timestamps and year, month, and day to each other. This article will describe how to implement this conversion process using PHP.

1. Get the current timestamp

In PHP, use the time() function to get the current timestamp. The timestamp refers to the number of seconds from 0:00:00 on January 1, 1970 to the current time. The current timestamp can be obtained through the following code:

$current_timestamp = time();

2. Convert the timestamp to standard time format

In PHP, use the date() function to convert the timestamp into year, month and day. standard time format. The first parameter of the date() function is the time format, and different time formats can be obtained through different format combinations. The following is the code to convert the timestamp into year, month and day format:

$timestamp = 1607323200;
$standard_time = date('Y-m-d', $timestamp);
echo $standard_time; //输出结果为2020-12-07

Among them, 1607323200 represents the timestamp, which is 0:00:00 on December 7, 2020.

3. Convert the year, month and day to a timestamp

In PHP, use the strtotime() function to convert the year, month and day into a timestamp. The following is the code to convert year, month and day to timestamp:

$date = '2021-01-01';
$timestamp = strtotime($date);
echo $timestamp; //输出结果为1609459200，即2021年1月1日0时0分0秒的时间戳

4. Convert timestamp to date plus time format

In PHP, you can get different formats through different combinations Date plus time format. The following is the code to convert the timestamp into date plus time format:

$timestamp = 1607323200;
$date_time = date('Y-m-d H:i:s', $timestamp);
echo $date_time; //输出结果为2020-12-07 00:00:00

Among them, Y-m-d represents the year, month and day format, and H:i:s represents the time format.

Summary

In PHP, the conversion of timestamp and year, month and day is a very common operation. The current timestamp can be obtained through the time() function, the timestamp can be converted into a standard time format through the date() function, and the year, month and day can be converted into a timestamp through the strtotime() function. At the same time, different date and time formats can also be obtained through different format combinations. Mastering these conversion methods will make it easier to handle time-related operations in website development.

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