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<?php $tz=new DateTimeZone('Europe/Moscow'); $d1=new DateTime('2014-10-26T00:59:59', $tz); $d2=new DateTime('2014-10-26T01:59:59', $tz); var_dump($d2->diff($d1, true)->h); var_dump($d1->add($int=new DateInterval('PT2H'))->format(DateTime::ISO8601), $d2->sub($int)->format(DateTime::ISO8601));
Output for 5.4.34 - 7.4.0
int(2) string(24) "2014-10-26T02:59:59+0300" string(24) "2014-10-25T23:59:59+0400"
Output for 5.3.7 - 5.4.32
int(1) string(24) "2014-10-26T02:59:59+0400" string(24) "2014-10-25T23:59:59+0400"
Output for 5.3.0 - 5.3.6
int(1) string(24) "2014-10-26T02:59:59+0300" string(24) "2014-10-25T23:59:59+0400"
Output for 5.2.0 - 5.2.17
Fatal error: Call to undefined method DateTime::diff() in /in/YgUIV on line 6
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTimeZone' not found in /in/YgUIV on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/YgUIV on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/YgUIV on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YgUIV on line 6
Process exited with code 255.