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run code in 150+ php & hhvm versions
Bugs & Features
<?php function getDiffInHours(\DateTime $earlierDate, \DateTime $laterDate) { $utc = new \DateTimeZone('UTC'); //First convert to UTC to avoid missing hours due to DST etc $earlierDate->setTimezone($utc); $laterDate->setTimezone($utc); $diff = $laterDate->diff($earlierDate); var_dump($diff); } $hours = getDiffInHours(new \DateTime(), new \DateTime('+ 31 hours'));
Output for 7.1.0
object(DateInterval)#4 (16) { ["y"]=> int(0) ["m"]=> int(0) ["d"]=> int(1) ["h"]=> int(7) ["i"]=> int(0) ["s"]=> int(0) ["f"]=> float(9.9999999999996E-6) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(1) ["days"]=> int(1) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for 5.3.27 - 5.3.29, 5.4.17 - 5.6.28, 7.0.1 - 7.0.14
object(DateInterval)#4 (15) { ["y"]=> int(0) ["m"]=> int(0) ["d"]=> int(1) ["h"]=> int(7) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(1) ["days"]=> int(1) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for 7.0.0
object(DateInterval)#4 (15) { ["y"]=> int(0) ["m"]=> int(0) ["d"]=> int(1) ["h"]=> int(6) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(1) ["days"]=> int(1) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for hhvm-3.12.0
object(DateInterval)#4 (0) { }
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
object(DateInterval)#4 (8) { ["y"]=> int(0) ["m"]=> int(0) ["d"]=> int(1) ["h"]=> int(7) ["i"]=> int(0) ["s"]=> int(0) ["invert"]=> int(1) ["days"]=> int(1) }
Output for 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 12 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 12 Fatal error: Call to undefined method DateTime::diff() in /in/YT6pu on line 8
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 12 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 12 Fatal error: Class 'DateTime' not found in /in/YT6pu on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/YT6pu on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Parse error: parse error, unexpected T_STRING, expecting ')' in /in/YT6pu on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YT6pu on line 2 Parse error: parse error, expecting `')'' in /in/YT6pu on line 2
Process exited with code 255.