Implementation techniques for converting PHP date and time to numbers

As a commonly used server-side scripting language, PHP’s date and time processing functions are quite powerful and flexible. Date and time often need to be converted into digital form in programming to facilitate storage, comparison, calculation and other operations. This article will introduce how to convert date and time to digital format in PHP, and give specific code examples.

1. Convert date and time to timestamp

Time stamp is a digital format that represents date and time. In PHP, you can use the strtotime() function to convert the date into Convert time to timestamp. The timestamp represents the number of seconds that have passed since midnight on January 1, 1970.

$date = "2021-08-24 15:30:00";
$timestamp = strtotime($date);
echo $timestamp;

The above code converts the date and time "2021-08-24 15:30:00" into a timestamp and outputs the result. Timestamps can be used to store and compare different date times.

2. Convert timestamp to date and time

If you need to convert timestamp to a more readable date and time format, you can use the date() function .

$timestamp = 1629786600;
$date = date("Y-m-d H:i:s", $timestamp);
echo $date;

The above code converts the timestamp 1629786600 into date and time format, and outputs the result "2021-08-24 15:30:00".

3. Format the date into pure numeric form

Sometimes, you need to convert the date and time into pure numeric form, such as converting "2021-08-24 15:30:00" is "20210824153000".

$date = "2021-08-24 15:30:00";
$numericDate = date("YmdHis", strtotime($date));
echo $numericDate;

The above code formats the date and time into pure numeric form and outputs the result "20210824153000".

4. Convert date and time to Unix time

Unix time refers to the number of seconds that have elapsed from 0:00 on January 1, 1970 to the given time. You can use the time() function to get the Unix timestamp of the current time.

$unixTime = time();
echo $unixTime;

The above code gets the Unix timestamp of the current time and outputs the result.

Summary

This article introduces the implementation skills of converting date and time into digital format in PHP, and gives specific code examples. By using methods such as timestamps, date formatting, and Unix time, date and time can be easily converted and processed to better meet various programming needs. In actual development, choosing the appropriate date and time format conversion method according to the specific situation can improve the readability and maintainability of the code.

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