3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $date = new DateTime(''); $date->modify('1st day of month'); $i = new DateInterval('P1M'); $end = new DateTime('-1 year'); while ($date >= $end) { echo $date->format('Y F') . PHP_EOL; $date = $date->sub($i); }
Output for 5.3.2 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Warning: DateTime::modify(): Failed to parse time string (1st day of month) at position 0 (1): Unexpected character in /in/AA0NE on line 3 2014 April 2014 March 2014 March 2014 February 2014 January 2013 December 2013 November 2013 October 2013 September 2013 August 2013 July 2013 June 2013 May
Output for 5.3.0 - 5.3.1, hhvm-3.10.0
2014 April 2014 March 2014 March 2014 February 2014 January 2013 December 2013 November 2013 October 2013 September 2013 August 2013 July 2013 June 2013 May
Output for 5.2.13 - 5.2.17
Warning: DateTime::modify(): Failed to parse time string (1st day of month) at position 0 (1): Unexpected character in /in/AA0NE on line 3 Fatal error: Class 'DateInterval' not found in /in/AA0NE on line 4
Process exited with code 255.
Output for 5.2.0 - 5.2.12
Fatal error: Class 'DateInterval' not found in /in/AA0NE on line 4
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/AA0NE on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/AA0NE on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/AA0NE on line 2