/**
* Update recurring event dates
*
* @since 0.9
*/
function ctc_update_recurring_event_dates()
{
// Localized dates
$yesterday = date_i18n('Y-m-d', time() - DAY_IN_SECONDS);
// Get all events with end date in past and have valid recurring value and
$events_query = new WP_Query(array('post_type' => 'ctc_event', 'nopaging' => true, 'meta_query' => array('relation' => 'AND', array('key' => '_ctc_event_end_date', 'value' => date_i18n('Y-m-d'), 'compare' => '<'), array('key' => '_ctc_event_recurrence', 'value' => array('weekly', 'monthly', 'yearly'), 'compare' => 'IN'))));
// Loop events
if (!empty($events_query->posts)) {
foreach ($events_query->posts as $post) {
// Get recurrence
$recurrence = get_post_meta($post->ID, '_ctc_event_recurrence', true);
$recurrence_end_date = get_post_meta($post->ID, '_ctc_event_recurrence_end_date', true);
// Get start and end dates
$start_date = get_post_meta($post->ID, '_ctc_event_start_date', true);
$end_date = get_post_meta($post->ID, '_ctc_event_end_date', true);
// Difference between start and end date in seconds
$time_difference = strtotime($end_date) - strtotime($start_date);
// Calculate incremented dates
$new_start_date = ctc_increment_future_date($start_date, $recurrence);
// get closest incremented date in future
$new_end_date = date('Y-m-d', strtotime($new_start_date) + $time_difference);
// add difference between original start/end date to new start date to get new end date
// Has recurrence ended?
// Recurrence end date exists and is earlier than new start date
if ($recurrence_end_date && strtotime($recurrence_end_date) < strtotime($new_start_date)) {
// Unset recurrence option to keep dates from being moved forward
update_post_meta($post->ID, '_ctc_event_recurrence', 'none');
} else {
// Update dates
update_post_meta($post->ID, '_ctc_event_start_date', $new_start_date);
update_post_meta($post->ID, '_ctc_event_end_date', $new_end_date);
}
}
}
}
/**
* Move date forward
*
* Move date forward by week, month or year until it is not in past (in case wp cron misses a beat).
*
* @since 0.9
* @param string $date Date to move into the future
* @param string $increment 'weekly', 'monthly' or 'yearly'
* @return string Future date
*/
function ctc_increment_future_date($date, $increment)
{
// In case no change could be made
$new_date = $date;
// Get month, day and year, increment if date is valid
list($y, $m, $d) = explode('-', $date);
if (checkdate($m, $d, $y)) {
// Increment
switch ($increment) {
// Weekly
case 'weekly':
// Add 7 days
list($y, $m, $d) = explode('-', date('Y-m-d', strtotime($date) + WEEK_IN_SECONDS));
break;
// Monthly
// Monthly
case 'monthly':
// Move forward one month
if ($m < 12) {
// same year
$m++;
// add one month
} else {
// next year (old month is December)
$m = 1;
// first month of year
$y++;
// add one year
}
break;
// Yearly
// Yearly
case 'yearly':
// Move forward one year
$y++;
break;
}
// Day does not exist in month
// Example: Make "November 31" into 30 or "February 29" into 28 (for non-leap year)
$days_in_month = date('t', mktime(0, 0, 0, $m, 1, $y));
if ($d > $days_in_month) {
$d = $days_in_month;
}
// Form the date string
$new_date = date('Y-m-d', mktime(0, 0, 0, $m, $d, $y));
// pad day, month with 0
// Is new date in past? Increment until it is not (automatic correction in case wp-cron misses a beat)
$today_ts = strtotime(date_i18n('Y-m-d'));
// localized
$new_date_ts = strtotime($new_date);
while ($new_date_ts < $today_ts) {
$new_date = ctc_increment_future_date($new_date, $increment);
$new_date_ts = strtotime($new_date);
}
}
// Return filterable
return apply_filters('ctc_move_date_forward', $new_date, $date, $increment);
}