<?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;
}
Notice: date_default_timezone_set(): Timezone ID 'America/Houston' is invalid in /in/NhbRc on line 2
Output for 7.3.32 - 7.3.33
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 - 4.3.11, 4.4.0 - 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