The date() function formats a local date and time, and returns the formatted date string.

Basically uses of The date() function formats a local date and time. The date() function returns the formatted date string.

syntex of date () function

 date(format,timestamp);

you can see belloe example:

 <?php
//now call date () for printing the current  day
echo date("l") . "<br>";


//now call date () for printing the current day,  current time, AM or PM
echo date("l  h:i:s A") . "<br>";


// now call date () for printing the current day, current date,current month,current year, current time, AM or PM
echo date("l jS \of F Y h:i:s A") . "<br>";


?>

output will come following:
1- When we will print date("l"), then output will come

Friday

2-When we will print date("l h:i:s A"), then output will come

Friday 02:47:42 AM

3-When we will print date("l h:i:s A"), then output will come

Friday 27th of November 2015 02:47:42 AM