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<?php $thirtyOnedayMonths = array( 1, 3, 5, 7, 8, 10, 12 ); $oneMonth = new \DateInterval('P1M'); $format = 'Y-m-d'; foreach($thirtyOnedayMonths as $month){ $date = new \DateTime("2013-{$month}-31 00:00:01"); var_dump($date->format($format)); $date->sub($oneMonth); var_dump($date->format($format)); }
Output for 4.3.0 - 4.3.1, 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/12RRo on line 6 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/12RRo on line 10 Fatal error: Cannot instantiate non-existent class: dateinterval in /in/12RRo on line 6
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/12RRo on line 6 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/12RRo on line 10 Fatal error: Class 'DateInterval' not found in /in/12RRo on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
string(10) "2013-01-31" string(10) "2012-12-31" string(10) "2013-03-31" string(10) "2013-03-03" string(10) "2013-05-31" string(10) "2013-05-01" string(10) "2013-07-31" string(10) "2013-07-01" string(10) "2013-08-31" string(10) "2013-07-31" string(10) "2013-10-31" string(10) "2013-10-01" string(10) "2013-12-31" string(10) "2013-12-01"
preferences:
33.06 ms | 1164 KiB | 13 Q