<?php
$start= "2013-01-31";
$current = date('F', strtotime("first day of next month",strtotime($start)));
echo $current."\n";
$date = new DateTime('2013-01-31');
$date->modify( 'first day of next month' );
echo $date->format('F');
January
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/jY1OC on line 9
January
Output for 5.2.0 - 5.2.12
January
March
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
January
Fatal error: Class 'DateTime' not found in /in/jY1OC on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
January
Fatal error: Cannot instantiate non-existent class: datetime in /in/jY1OC on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
January
Fatal error: Cannot instantiate non-existent class: datetime in /in/jY1OC on line 8