How to convert numbers to timestamp in php

PHP is a very powerful programming language that is widely used in WEB development. A frequently used function is to convert time into a timestamp, which is to use an integer to represent a date and time value. For PHP developers, how to convert numbers into timestamps is a very important skill. Below is a brief introduction to how to convert numbers into timestamps via PHP.

In PHP, the timestamp refers to the number of seconds since January 1, 1970, 0:00:00 (Greenwich Mean Time). So, to convert a number into a timestamp, we need to know what time this number represents. This number can be converted into time in the following ways:

1. Using the date function

In PHP, we can use the built-in date() function to convert the timestamp Format it into a specific date and time string. The specific implementation is as follows:

$timestamp = 1609459200; // 代表2021年1月1日零点
$date = date('Y-m-d H:i:s', $timestamp); // 将时间戳格式化为日期时间字符串
echo $date;

Code execution result:

2021-01-01 00:00:00

2. Use the DateTime class

PHP’s DateTime class Provides convenient date and time operation functions, and also supports converting timestamps into date and time objects. An example is as follows:

$timestamp = 1609459200;
$datetime = new DateTime();
$datetime->setTimestamp($timestamp); // 将时间戳设置给日期时间对象
echo $datetime->format('Y-m-d H:i:s'); // 格式化日期时间字符串

Code execution result:

2021-01-01 00:00:00

3. Use strtotime function

PHP’s strtotime function can convert a string into a timestamp, also Can convert numbers into timestamps. An example is as follows:

$timestamp = 1609459200;
$date = strtotime(date('Y-m-d H:i:s', $timestamp));
echo $date;

Code execution result:

1609459200

In summary, converting numbers into timestamps is a very important task, and it is also very easy to implement in PHP. Mastering this skill can help developers better handle date and time related issues and improve development efficiency.

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