function get_xml_events($month, $year)
{
$events = array();
$xml = new SimpleXMLElement(iCalendarToXML());
foreach ($xml->VEVENT as $event) {
//get start year,month,day and end year,month,day
$start = date_parse_from_format("Ynj", (string) $event->DTSTART);
$end = date_parse_from_format("Ynj", (string) $event->DTEND);
//make timestamp for start, end, and current
$end_of_month = gmmktime(0, 0, 0, $month + 1, 1, $year);
$start_of_month = gmmktime(0, 0, 0, $month, 1, $year);
$start_date = gmmktime(0, 0, 0, $start["month"], $start["day"], $start["year"]);
$end_date = gmmktime(0, 0, 0, $end["month"], $end["day"], $end["year"]);
//if current month and year are within start and end range
if ($end_of_month > $start_date && $start_of_month < $end_date) {
//if event start date is after first of month
if ($start_of_month <= $start_date) {
$total_days = floor(($end_date - $start_date) / 86400);
//count and mark the booked days in the month
for ($i = 0; $i <= $total_days && $i <= gmdate('t', $start_of_month); $i++) {
$class = 'booked';
//special classes for first and last days
if ($i == 0) {
$class .= ' first';
} elseif ($i == $total_days) {
$class .= ' last';
}
$events[$start["day"] + $i] = $class;
}
} else {
$total_days = floor(($end_date - $start_of_month) / 86400);
for ($i = 0; $i <= $total_days && $i <= gmdate('t', $start_of_month); $i++) {
$class = 'booked';
//special classes for last day
if ($i == $total_days) {
$class .= ' last';
}
$events[$i + 1] = $class;
}
}
}
}
return $events;
}
$xml .= '<' . strtoupper($value) . ">\n";
$spaces += 2;
continue;
} elseif ($propertyName == 'END') {
$spaces -= 2;
$xml .= str_repeat(" ", $spaces);
$xml .= '</' . strtoupper($value) . ">\n";
continue;
}
$xml .= str_repeat(" ", $spaces);
$xml .= '<' . $propertyName;
if ($attributes) {
// There can be multiple attributes
$attributes = explode(';', $attributes);
foreach ($attributes as $att) {
list($attName, $attValue) = explode('=', $att, 2);
$xml .= ' ' . $attName . '="' . htmlspecialchars($attValue) . '"';
}
}
$xml .= '>' . htmlspecialchars($value) . '</' . $propertyName . ">\n";
}
}
return $xml;
}
// Input ical file to string
$icalFile = 'https://www.google.com/calendar/ical/teamsiems%40gmail.com/public/basic.ics';
$icalString = file_get_contents($icalFile);
$xmlString = iCalendarToXML($icalString);
// Output xml string to file
$xmlFile = 'google-ical.xml';
file_put_contents($xmlFile, $xmlString);
