php изменить формат даты

Ответ от Іиничный реалист[гуру]
Почитать доки по php
там внятно написано
<?php
// Prints something like: Wednesday
echo date("l");
// Prints something like: Wednesday 15th of January 2003 05:51:38 AM
echo date("l dS of F Y h:i:s A");
// Prints: July 1, 2000 is on a Saturday
echo "July 1, 2000 is on a ". date("l", mktime(0, 0, 0, 7, 1, 2000));
?>
вот еще пример
<?php
// Assuming today is: March 10th, 2001, 5:16:18 pm
$today = date("F j, Y, g:i a"); // March 10, 2001, 5:16 pm
$today = date("m.d.y"); // 03.10.01
$today = date("j, n, Y"); // 10, 3, 2001
$today = date("Ymd"); // 20010310
$today = date('h-i-s, j-m-y, it is w Day z '); // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$today = date('i is he jS day.'); // It is the 10th day.
$today = date("D M j G:i:s T Y"); // Sat Mar 10 15:16:08 MST 2001
$today = date('H:m:s m is mo
h'); // 17:03:17 m is month
$today = date("H:i:s"); // 17:16:17
?>