<?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, $end);
foreach ($period as $dt) {
echo $dt->format("Y-m") . PHP_EOL;
}
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/Ssk64 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/Ssk64 on line 6
Fatal error: Class 'DateInterval' not found in /in/Ssk64 on line 7
Process exited with code 255.
Output for 5.2.0 - 5.2.12
Fatal error: Class 'DateInterval' not found in /in/Ssk64 on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/Ssk64 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/Ssk64 on line 4
Process exited with code 255.