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<?php $start = new DateTime('2010-12-02'); $start->modify('first day of this month'); $end = clone $start; $end->modify('-1 year'); $end->modify('first day of next month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); var_dump($period); foreach ($period as $dt) { echo $dt->format("Y-m") . PHP_EOL; }
based on KbDIg
Output for 7.1.0
object(DatePeriod)#4 (6) { ["start"]=> object(DateTime)#5 (3) { ["date"]=> string(26) "2010-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["current"]=> NULL ["end"]=> object(DateTime)#6 (3) { ["date"]=> string(26) "2010-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["interval"]=> object(DateInterval)#7 (16) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["f"]=> float(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> bool(false) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } ["recurrences"]=> int(1) ["include_start_date"]=> bool(true) }
Output for 5.5.24 - 5.6.28, 7.0.0 - 7.0.14
object(DatePeriod)#4 (6) { ["start"]=> object(DateTime)#5 (3) { ["date"]=> string(26) "2010-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["current"]=> NULL ["end"]=> object(DateTime)#6 (3) { ["date"]=> string(26) "2010-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["interval"]=> object(DateInterval)#7 (15) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> bool(false) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } ["recurrences"]=> int(1) ["include_start_date"]=> bool(true) }
Output for hhvm-3.10.0 - 3.12.0
object(DatePeriod)#4 (7) { ["start":"DatePeriod":private]=> object(DateTime)#5 (3) { ["date"]=> string(26) "2010-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["interval":"DatePeriod":private]=> object(DateInterval)#6 (0) { } ["end":"DatePeriod":private]=> object(DateTime)#2 (3) { ["date"]=> string(26) "2010-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["options":"DatePeriod":private]=> NULL ["current":"DatePeriod":private]=> object(DateTime)#7 (3) { ["date"]=> string(26) "2010-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["recurrances":"DatePeriod":private]=> NULL ["iterKey":"DatePeriod":private]=> int(0) }
Output for 5.4.30 - 5.4.45
object(DatePeriod)#4 (6) { ["start"]=> object(DateTime)#5 (3) { ["date"]=> string(26) "2010-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["current"]=> NULL ["end"]=> object(DateTime)#6 (3) { ["date"]=> string(26) "2010-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["interval"]=> object(DateInterval)#7 (15) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(0) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } ["recurrences"]=> int(1) ["include_start_date"]=> bool(true) }
Output for 5.3.27 - 5.3.29, 5.4.17 - 5.4.29
object(DatePeriod)#4 (6) { ["start"]=> object(DateTime)#5 (3) { ["date"]=> string(19) "2010-12-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["current"]=> NULL ["end"]=> object(DateTime)#6 (3) { ["date"]=> string(19) "2010-01-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } ["interval"]=> object(DateInterval)#7 (15) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(0) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(0) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } ["recurrences"]=> int(1) ["include_start_date"]=> bool(true) }
Output for 5.3.0 - 5.3.26, 5.4.0 - 5.4.16
object(DatePeriod)#4 (0) { }
Output for 5.2.13 - 5.2.17
Warning: DateTime::modify(): Failed to parse time string (first day of this month) at position 10 (o): The timezone could not be found in the database in /in/oCGl0 on line 3 Warning: DateTime::modify(): Failed to parse time string (first day of next month) at position 10 (o): The timezone could not be found in the database in /in/oCGl0 on line 6 Fatal error: Class 'DateInterval' not found in /in/oCGl0 on line 7
Process exited with code 255.
Output for 5.2.0 - 5.2.12
Fatal error: Class 'DateInterval' not found in /in/oCGl0 on line 7
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/oCGl0 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_VARIABLE in /in/oCGl0 on line 4
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_VARIABLE in /in/oCGl0 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/oCGl0 on line 4
Process exited with code 255.