$time = microtime(true);
$microseconds = sprintf('%06d', ($time - floor($time)) * 1000000);

$dt = new DateTime(date('Y-m-d H:i:s.' . $microseconds, $time));

Answer:

$origEvent = new DateTime(...);
$newEvent = new DateTime(...);
$someOtherEvent = new DateTime(...);

//get the time difference between the orignal event and the edited event
$diff = $origEvent->diff($newEvent);

$someOtherEvent->add($diff);

Answer:

• If date1 is lower than date2 then date1->diff(date2) will result in a negative interval
• If date2 is lower than date1 then date1->diff(date2) will result in a positive interval

• The use of DateTime::add() with a negative interval is equivalent to the use of DateTime::sub() with the absolute value of this same interval
• The use of DateTime::sub() with a negative interval is equivalent to the use of DateTime::add() with the absolute value of this same interval

• As long as you are using DateTime::diff() you are assuming that your PHP version is greater than or equal to 5.3.0, and you can use all new functions available in this PHP version; that is to say DateTime::add() and DateTime::sub()
• The use of DateTime::modify() is justified when your PHP version is greater than or equal to 5.2.0. (In this version DateTime::add() and DateTime::sub() are not yet available)

<?php
$dts = new DateTime(); //this returns the current date time
echo strlen($dts);
?>

$date = new DateTime('2000-01-01');
$result = $date->format('Y-m-d H:i:s');

if ($result) {
  echo $result;
} else { // format failed
  echo "Unknown Time";
}

Answer :

$expire_time = 'Mon Jun 23 2014 16:17:05 GMT+0530 (India Standard Time)';
$expire_time = substr($expire_time, 0, strpos($expire_time, '('));

echo date('Y-m-d h:i:s', strtotime($expire_time));

 Answer:

Solution :

// $datetime is something like: 2014-01-31 13:05:59
$time = strtotime($datetimeFromMysql);
$myFormatForView = date("m/d/y g:i A", $time);
// $myFormatForView is something like: 01/31/14 1:05 PM