function get_recurrence_dates($event_start_date, $event_end_date, $recur_end_date = '', $recur_frequency = '', $recur_interval = '')
{
$recur_interval = strtolower($recur_interval);
//echo "<br />Start Date: ".$event_start_date."<br />";
//echo "End Date: ".$event_end_date."<br />";
//echo "Recur Date: ".$recur_end_date."<br />";
//echo "Interval: ".$recur_interval."<br /><br />";
$days_span = days_span($event_start_date, $event_end_date);
//echo "Days Span: ".$days_span."<br />";
// For each day we will attempt to determine the
// recurrence dates for this event.
$recur_days = array();
$recur_days[] = $event_start_date;
// Define Date "Values" for Numeric Comparison
$recur_end_date_value = implode("", explode("-", $recur_end_date)) + 0;
$event_end_date_value = implode("", explode("-", $event_end_date)) + 0;
// Define Variables for Recur Monthly by Weekday Occurence of the Month
list($start_year, $start_month, $start_day) = explode("-", $event_start_date);
$start_weekday = weekday_of_the_month($event_start_date);
$start_weekday_occurrence = weekday_occurrence($event_start_date);
$recur_date_value = 0;
$i = 1;
if ($recur_end_date_value > $event_end_date_value && $recur_interval != '' && $recur_interval != 'none' && $recur_end_date != '') {
while ($recur_date_value < $recur_end_date_value && $i < 100) {
// Recur Daily
if ($recur_interval == 'day') {
$recur_date = add_delta_ymd($event_start_date, 0, 0, $i * $recur_frequency);
// Recur Weekly
} elseif ($recur_interval == 'week') {
$recur_date = add_delta_ymd($event_start_date, 0, 0, $i * 7 * $recur_frequency);
// Recur Monthly by Day of the Month
} elseif ($recur_interval == 'day-month') {
$recur_date = add_delta_ymd($event_start_date, 0, $i * $recur_frequency, 0);
// Recur Monthly by Weekday Occurence of the Month (The Difficult One!)
} elseif ($recur_interval == 'weekday-month') {
$new_month = $start_month + $i * $recur_frequency;
$new_year = $start_year;
while ($new_month > 12) {
// Adjust so $new_month is between 1 and 12.
$new_year++;
$new_month -= 12;
}
$recur_date = xst_weekday_of_the_month($start_weekday_occurrence, $start_weekday, $new_year, $new_month);
//echo "Weekday: ".weekday_of_the_month($event_start_date)."<br />";
//echo "Occurence: ".weekday_occurrence($event_start_date)."<br />";
//echo "Xst Recur Date: ".$recur_date."<br />";
//echo "Year: $new_year, Month: $new_month<br />";
} elseif ($recur_interval == 'year') {
$recur_date = add_delta_ymd($event_start_date, $i, 0, 0);
}
$recur_date_value = implode("", explode("-", $recur_date)) + 0;
if ($recur_date_value > $recur_end_date_value) {
break;
}
if ($recur_date != '') {
$recur_days[] = $recur_date;
}
$i++;
}
// end of while
}
// end of if
// If the event spans more than 1 day then we need to
// determine the dates of each of those days, for each recurrency.
// We do this after, because of the last date of the month differences.
$spanning_days = array();
if ($days_span > 1 && $recur_interval != 'day') {
foreach ($recur_days as $recur_day) {
for ($days = 1; $days < $days_span; $days++) {
$spanning_days[] = add_delta_ymd($recur_day, 0, 0, $days);
}
// end of for $days_span
}
// end of foreach $recur_day
}
reset($spanning_days);
// Merge the two arrays together and get the unique dates.
@($all_days = array_merge($spanning_days, $recur_days));
@($all_days_assoc = array_count_values($all_days));
// dates assoc with counts/freq
@ksort($all_days_assoc);
return $all_days_assoc;
}
$_POST['recur_day'] = $limited_day;
$_REQUEST['recur_year'] = $limited_year;
$_REQUEST['recur_mon'] = $limited_month;
$_REQUEST['recur_day'] = $limited_day;
//fail the request
$dates_within_limit = false;
$bookingTooFarAhead = true;
}
}
// DEFINE THE RECURRING DATES, FREQUENCY AND INTERVAL
$recur_freq = stripslashes($_REQUEST['recur_freq']);
$recur_interval = stripslashes($_REQUEST['recur_interval']);
$recurring_dates = array();
$recurring_dates = get_recurrence_dates($starting_date, $ending_date, $recur_date, $recur_freq, $recur_interval);
//NUMBER OF SPANNING DAYS (NOT including the recurrence dates)
$days_span = days_span($starting_date, $ending_date);
//echo "<br />Days Span: $days_span<br />";
// CHECK REQUIRED FIELDS
if ($_POST['subject'] == "") {
$page_error_message = "You have not filled out the add form completely. Please type in a subject.";
} elseif ($unix_starting_date < $unix_todays_date) {
$page_error_message = "Your starting date is in the past! Please enter a start date in the future.";
} elseif (!check_valid_date($starting_date)) {
$page_error_message = "Your starting date does not exist. There are only " . number_of_days_in_month($_POST['start_year'], $_POST['start_mon']) . " days in " . month_name($_POST['start_mon']) . " " . $_POST['start_year'] . ". Please check the calendar and try again.";
} elseif (!$dates_within_limit) {
if ($bookingTooSoonAhead) {
$page_error_message = "Your starting time is outside of the minimum booking period of " . $bookeeMinimumAdvanceBookingLimit . " hours.<br><br>";
$page_error_message .= "Please select a later booking slot and re-submit the form.";
} else {
//Basically: $bookingTooFarAhead == true
$page_error_message = "Your ending date is outside of the booking limit of " . $bookeeAdvanceBookingLimit / 24 . " days.<br><br>";
