How to convert time and timestamp to each other in php

PHP is a popular open source programming language used for web development. Timestamp is an important concept in PHP which is used to represent an integer value of a specific date and time. Timestamps allow for easy mathematical operations such as addition, subtraction, averaging, etc., as well as easy conversion to other date formats. This article will explain how to use PHP to convert time to timestamp, timestamp to date, and more.

1. Convert time to timestamp

In PHP, to convert time to timestamp, you can use the strtotime() function. This function parses a datetime formatted string into a Unix timestamp. Here is an example:

<?php $date = "2021-08-01 10:20:30";
$timestamp = strtotime($date);
echo $timestamp;
?>

In the above code, the $date variable contains the datetime string to be converted to a timestamp, such as "2021-08-01 10:20:30". Then, use the strtotime() function to convert $date to a Unix timestamp and store the result in the $timestamp variable. Finally, use the echo command to output the timestamp to the screen.

2. Convert timestamp to date

In PHP, use the date() function to convert timestamp to date format. The following is a sample code:

<?php $timestamp = 1627827638;
$date = date(&#39;Y-m-d H:i:s&#39;, $timestamp);
echo $date;
?>

In the above code, $timestamp is a Unix timestamp, such as "1627827638", which means August 01, 2021, 10:20:38. Use the date() function to convert $timestamp to the specified date format, for example: "Y-m-d H:i:s", Y represents the year, m represents the month, d represents the date, H represents the hour, i represents the minute, and s represents Number of seconds. The results will be stored in the $date variable and output to the screen using the echo command.

3. Convert the timestamp into a readable string

Sometimes, we need to convert the timestamp into a string that is easy for humans to read. In PHP, you can use the strftime() function to convert a timestamp into a string in a specified format. The following is a sample code:

<?php $timestamp = 1627827638;
$date = strftime(&#39;%Y-%m-%d %H:%M:%S&#39;, $timestamp);
echo $date;
?>

In the above code, $timestamp is a Unix timestamp, such as "1627827638", which means August 01, 2021, 10:20:38. Use the strftime() function to convert $timestamp to a date string in the specified format. For example: "%Y-%m-%d %H:%M:%S" format, where %Y represents the year, %m represents the month, %d represents the date, %H represents the hour, %M represents the minute, %S represents the number of seconds. The results will be stored in the $date variable and output to the screen using the echo command.

Summary:

This article introduces how to use PHP to convert time to timestamp, timestamp to date and other operations, these operations can help deal with time and date related tasks. PHP provides many useful functions that enable developers to accomplish these tasks easily. I hope this article will be helpful to readers and make you more proficient in time and date related tasks.

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