date() function is used to display times and dates in
various ways. The function takes a format string and a time as arguments.
If the time argument is left off, the current time and date will be used.
The time argument is specified as an integer in number of seconds since
the Unix Epoch on January 1, 1970. The format string is used to indicate
which date/time components should be displayed and how they should
For example, if we wanted to print the current date and time,
we might use a tag like:
<?echo date("D M d, Y H:i:s")?>.
This looks like: Wed Dec 13, 2017 11:52:50
In the above you will find that the various characters in
the formatting string were replaced with a date/time component.
Any characters not replaced with anything were displayed verbosely.
The valid formatting characters are:
gmdate() function is identical to the
date() function except that it uses Greenwich Mean Time
instead of the current local time.
The time() function simply returns the current local
time in seconds since Unix epoch. It is equivalent to calling