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<?php date_default_timezone_set('America/Los_Angeles'); $now = new Datetime("2013-04-09 23:45:15",new DateTimeZone("UTC")); $lvLA = new Datetime("2013-04-09 23:44:21",new DateTimeZone('America/Los_Angeles')); $lvUTC = new Datetime("2013-04-09 23:44:21",new DateTimeZone('UTC')); $interval1 = $lvLA->diff($now,true); $interval2 = $lvUTC->diff($now,true); print_r($interval1); print_r($interval2);
Output for 7.1.0
DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 6 [i] => 59 [s] => 6 [f] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 0 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 0 [i] => 0 [s] => 54 [f] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 0 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 )
Output for 5.3.27 - 5.3.29, 5.4.17 - 5.6.28, 7.0.0 - 7.0.14
DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 6 [i] => 59 [s] => 6 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 0 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 0 [i] => 0 [s] => 54 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 0 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 )
Output for hhvm-3.12.0
DateInterval Object ( ) DateInterval Object ( )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.26, 5.4.0 - 5.4.16
DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 6 [i] => 59 [s] => 6 [invert] => 0 [days] => 0 ) DateInterval Object ( [y] => 0 [m] => 0 [d] => 0 [h] => 0 [i] => 0 [s] => 54 [invert] => 0 [days] => 0 )
Output for 5.2.0 - 5.2.17
Fatal error: Call to undefined method DateTime::diff() in /in/p853D on line 8
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Class 'Datetime' not found in /in/p853D on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function date_default_timezone_set() in /in/p853D on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: date_default_timezone_set() in /in/p853D on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: date_default_timezone_set() in /in/p853D on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: date_default_timezone_set() in /in/p853D on line 2