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run code in 150+ php & hhvm versions
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<?php date_default_timezone_set('America/Houston'); $start = new DateTime('2014-08-10'); $start->modify('first day of this month'); $end = new DateTime('2012-02-09'); $end->modify('first day of next month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); foreach ($period as $dt) { echo $dt->format("Y-m") . PHP_EOL; }
based on AGtJM
Output for 5.3.0 - 7.1.0
Notice: date_default_timezone_set(): Timezone ID 'America/Houston' is invalid in /in/NhbRc on line 2
Output for 5.2.13 - 5.2.17
Notice: date_default_timezone_set(): Timezone ID 'America/Houston' is invalid in /in/NhbRc on line 2 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/NhbRc on line 4 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/NhbRc on line 6 Fatal error: Class 'DateInterval' not found in /in/NhbRc on line 7
Process exited with code 255.
Output for 5.2.0 - 5.2.12
Notice: date_default_timezone_set(): Timezone ID 'America/Houston' is invalid in /in/NhbRc on line 2 Fatal error: Class 'DateInterval' not found in /in/NhbRc on line 7
Process exited with code 255.
Output for 5.1.2 - 5.1.6
Notice: date_default_timezone_set(): Timezone ID 'America/Houston' is invalid in /in/NhbRc on line 2 Fatal error: Class 'DateTime' not found in /in/NhbRc on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.1
Fatal error: Class 'DateTime' not found in /in/NhbRc on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function date_default_timezone_set() in /in/NhbRc on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: date_default_timezone_set() in /in/NhbRc on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: date_default_timezone_set() in /in/NhbRc on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: date_default_timezone_set() in /in/NhbRc on line 2