Let's talk about the function to convert timestamp in php

PHP is a widely used server-side programming language. One of its most useful functions is to operate date and time. In PHP, we usually use the timestamp function to handle time-related transactions. A timestamp is an integer value representing time, the number of seconds from 0:00:00 on January 1, 1970 to the present.

PHP provides many functions related to timestamps. For example, the date() function can convert timestamps into readable date strings. However, sometimes we need to convert date string to timestamp for easy manipulation of time. In this article, I will introduce you to PHP conversion timestamp functions.

First of all, the most commonly used timestamp function in PHP is the time() function. It returns the timestamp of the current time, which is the number of seconds from 0:00:00 on January 1, 1970 to the present. This function is very simple, just call it:

<?php
$timestamp = time();
echo $timestamp;
?>

The output result will be a 13-digit integer, representing the timestamp of the current time.

And if you have a specific date and time string and need to convert it to a timestamp, you can use the strtotime() function. This function converts date and time strings to timestamp format. For example, if we want to convert "2021-01-01 00:00:00" into a timestamp, we can do this:

<?php
$date_string = "2021-01-01 00:00:00";
$timestamp = strtotime($date_string);
echo $timestamp;
?>

At this time, the output result will also be a 13-bit integer, representing the parameter The timestamp corresponding to the date and time in the .

In addition to the regular timestamp functions, PHP also provides some other functions to operate timestamps. One of the very commonly used functions is the date() function. This function formats the timestamp into the desired date string. In this function, the timestamp is a required parameter, and the format string is a string that guides how to render the timestamp. For example, we want to format the current timestamp as: "April 15, 2021 15:30:00", we can do this:

<?php
$timestamp = time();
$date_string = date("Y年m月d日 H:i:s", $timestamp);
echo $date_string;
?>

In this example, we call the date() function, Pass it the timestamp and format string as parameters. The function converts the timestamp into a readable date string in the specified format and finally outputs it to the screen.

In general, PHP provides many useful timestamp functions, through which we can easily operate date and time. Whether it's converting a date string to a timestamp, or converting a timestamp to a readable date string, it can be easily accomplished. Hope this article helps you better understand the timestamp function in PHP.

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