<?php
if (!defined('ABSPATH')) exit;
class CronExpression_MonthField extends CronExpression_AbstractField
{
 public function isSatisfiedBy(DateTime $date, $value)
 {
 // Convert text month values to integers
 $value = str_ireplace(
 array(
 'JAN', 'FEB', 'MAR', 'APR', 'MAY', 'JUN',
 'JUL', 'AUG', 'SEP', 'OCT', 'NOV', 'DEC'
 ),
 range(1, 12),
 $value
 );
 return $this->isSatisfied($date->format('m'), $value);
 }
 public function increment(DateTime $date, $invert = false)
 {
 if ($invert) {
 // $date->modify('last day of previous month'); // remove for php 5.2 compat
 $date->modify('previous month');
 $date->modify($date->format('Y-m-t'));
 $date->setTime(23, 59);
 } else {
 //$date->modify('first day of next month'); // remove for php 5.2 compat
 $date->modify('next month');
 $date->modify($date->format('Y-m-01'));
 $date->setTime(0, 0);
 }
 return $this;
 }
 public function validate($value)
 {
 return (bool) preg_match('/[\*,\/\-0-9A-Z]+/', $value);
 }
}