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*PHP Date - What is a Timestamp?*
A timestamp is the number of seconds since January 1, 1970 at 00:00:00 GMT. This is also known as the Unix Timestamp.
*PHP Date - Format the Date*
The first parameter in the date() function specifies how to format the date/time. It uses letters to represent date and time formats. Here are some of the letters that can be used:
* d - The day of the month (01-31)
* m - The current month, as a number (01-12)
* Y - The current year in four digits
An overview of all the letters that can be used in the format parameter, can be found in our PHP Date reference. (http://wikinewforum.com)
Other characters, like"/", ".", or "-" can also be inserted between the letters to add additional formatting:
<?php
echo date("Y/m/d");
echo "<br />";
echo date("Y.m.d");
echo "<br />";
echo date("Y-m-d");
?>
The output of the code above could be something like this:
2006/07/11
2006.07.11
2006-07-11
*PHP Date - Adding a Timestamp*
The second parameter in the date() function specifies a timestamp. This parameter is optional. If you do not supply a timestamp, the current time will be used.
In our next example we will use the mktime() function to create a timestamp for tomorrow.
The mktime() function returns the Unix timestamp for a specified date.
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