// Set timezone

putenv('TZ=Australia/Adelaide');

// Date formatting

date("m.d.y");           // 03.10.01
date("F j, Y, g:i a");   // March 10, 2001, 5:16 pm
date("D M j G:i:s T Y"); // Sat Mar 10 17:16:08 MST 2001
date("l F j, Y");        // Saturday March 10, 2001
date("H:i:s");           // 17:16:17

date(DATE_RFC822);  //RFC822 format date for RSS

// Change date from MySQL format

list($year,$month,$date) = explode('-',$mysql_date);

$new_date = date("D M j Y", mktime(0,0,0,$month,$date,$year));

// Get UNIX timestamp from date and time (hr-min-sec-month-day-year)

$stamp = mktime(0, 0, 0, 3, 0, 2000);

Date & Time Basics

PHP