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When developing with PHP, timestamp is a very common value. Timestamps are often used for operations such as recording events and calculating time differences. In this article, we will discuss how to convert date and time to timestamp, and how to convert timestamp to date and time using PHP.
Convert date and time to timestamp
In PHP, we can use the strtotime() function to convert date and time strings to timestamp. This function will attempt to parse the date and time in the given string and return a Unix timestamp. For example:
$timestamp = strtotime("2022-04-18 15:30:00");
echo $timestamp; // 输出 1650315000
In the above example, we convert 2022-04-18 15:30:00 to a timestamp and store it in $timestamp in variables.
Note that the strtotime() function may produce unexpected results for some ambiguous date and time strings. Therefore, before using it, we recommend carefully testing and verifying its behavior to ensure that it is as expected.
Convert timestamp to date and time
If we have a Unix timestamp and want to convert it to a readable date and time format, we can Use the date() function. This function accepts two parameters: date and time format, and Unix timestamp. For example:
$timestamp = 1650315000;
$datetime = date("Y-m-d H:i:s", $timestamp);
echo $datetime; // 输出 2022-04-18 15:30:00
In the above example, we convert the $timestamp timestamp to a date and time string in Y-m-d H:i:s format, and Store it in the $datetime variable.
Summary
This article discusses how to perform date and time timestamp conversion in PHP and how to use strtotime() and date() function implements these two operations. When using these features, be careful to test and verify the behavior of your code to ensure it behaves as expected.
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