What is the php time to timestamp function?

PHP time to timestamp function

In PHP, sometimes it is necessary to convert date and time into timestamp for date and time calculation, processing and other operations. In PHP, you can use the time to timestamp function to achieve this function. The time to timestamp function can convert the date and time format that people are accustomed to using into the Unix timestamp format, which facilitates calculations in the program and facilitates processing of date and time related businesses.

Let’s explain the implementation process of PHP time to timestamp function.

PHP time to timestamp function parameters

PHP time to timestamp function is used to convert date and time into Unix time representation with timestamp. Its function prototype is as follows:

The

    int strtotime ( string $time [, int $now = time() ] )

$time parameter represents the date and time to be converted. This parameter can be in a human-friendly format such as "now", "3 October 2019", "next Friday", "2 weeks", etc., or it can be In the form of a Unix timestamp.

The $now parameter specifies an optional time point. The default value of the $now parameter is the current date and time (in the form of a Unix timestamp).

PHP time to timestamp function return value

PHP time to timestamp function returns the converted Unix timestamp format, indicating that it started at 0:00:00 on January 1, 1970 The number of seconds since the represented date and time.

Example

The following is an example of a PHP time to timestamp function. In this example, we want to convert the date and time in string format, such as "2019-10-01 12:00:00" to Unix timestamp format.

    <?php     $str_date = "2019-10-01 12:00:00";
    $timestamp = strtotime($str_date);
    echo $timestamp;
    ?>

In this example, the PHP internal function strtotime is used to convert the string "2019-10-01 12:00:00" into Unix timestamp format and output it. The running result is:

    1570003200

Here, we obtain the date and time "2019-10-01 12:00:00" in the form of a timestamp, and its value is 1570003200, which means from January 1, 1970 The number of seconds from 0:00:00 to the date and time.

End

PHP time to timestamp function is an important method to implement date and time processing. Its function is easy to use and very practical. Through the explanation of this article, you have mastered the use of PHP time to timestamp function. I hope this article will be helpful to your study.

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