php date function-PHP Tutorial-php.cn

php date function

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Release： 2016-07-30 13:30:13

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PHP’s date() function is used to format time or date.

PHP Date() Function

PHP Date() function formats timestamps into more readable dates and times.

Syntax

date(format,timestamp)

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Parameters	Description
format	Required. Specifies the format of the timestamp.
timestamp	Optional. Specify timestamp. The default is the current date and time.

PHP Date - What is Timestamp?

The timestamp is the number of seconds since January 1, 1970 (00:00:00 GMT). It is also called Unix Timestamp.

PHP Date - Format Date

date() The first parameter of the function specifies how to format the date/time. It uses letters to represent date and time formats. Here is a list of some available letters:

d - day of the month (01-31)
m - current month as a number (01-12)
Y - current year (Four digits)

You can find all the letters that can be used in the format parameter in our PHP Date reference manual.

You can insert other characters between letters, such as "/", "." or "-", so that you can add additional formatting:

<?php
echo date("Y/m/d");
echo "<br />";
echo date("Y.m.d");
echo "<br />";
echo date("Y-m-d");
?>

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The output of the above code is similar to this:

2006/07/11
2006.07.11
2006-07-11

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PHP Date - Adding a Timestamp The second parameter of the date() function specifies a timestamp. This parameter is optional. If you do not provide a timestamp, the current time will be used.

In our example, we will use the

mktime() function

to create a timestamp for tomorrow. The

mktime() function returns a Unix timestamp for a specified date.

Syntax

mktime(hour,minute,second,month,<span>day</span>,year,is_dst)

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If we need to get the timestamp of a certain day, we only need to set the day parameter

of the

mktime() function:

<?php
$tomorrow = mktime(0,0,0,date("m")<span>,date("d")&#43;1</span>,date("Y"));
echo "明天是 ".date("Y/m/d", $tomorrow);
?>

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The output of the above code is similar to this:

明天是 2006/07/12

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The above introduces the date function of PHP, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.