我目前在使用“导入网址”选项将数据导出到Google日历时遇到了一些问题。我的iCal格式如下（为了隐私目的，我隐藏了一些信息：
BEGIN:VCALENDAR
VERSION:2.0
PRODID:<-//maskedforprivacy//maskedforprivacy//NL>
X-WR-CALNAME: maskedforprivacy
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Amsterdam
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19810329T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19961027T030000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:20190401T101550-1143242585-maskedforprivacy
DTSTAMP:20190401T101550
DTSTART;TZID=Europe/Amsterdam:20190104T080000
DTEND;TZID=Europe/Amsterdam:20190104T170000
SUMMARY: ZLU 60 jaar - Medewerker op- en afbouw
LOCATION: maskedforprivacy - Europaplein -
END:VEVENT
BEGIN:VEVENT
UID:20190401T101550-1227247949-maskedforprivacy
DTSTAMP:20190401T101550
DTSTART;TZID=Europe/Amsterdam:20190105T160000
DTEND;TZID=Europe/Amsterdam:20190105T220000
SUMMARY: Nieuwjaarsconcert - Duty Manager
LOCATION: maskedforprivacy - Klinkertstraat -
END:VEVENT
BEGIN:VEVENT
UID:20190401T101550-698202101-maskedforprivacy
DTSTAMP:20190401T101550
DTSTART;TZID=Europe/Amsterdam:20190206T090000
DTEND;TZID=Europe/Amsterdam:20190206T101500
SUMMARY: Levering maaltijden - Medewerker logistiek
LOCATION: maskedforprivacy - Wiebachstraat -
END:VEVENT
BEGIN:VEVENT
UID:20190401T101550-549715553-maskedforprivacy
DTSTAMP:20190401T101550
DTSTART;TZID=Europe/Amsterdam:20000101T120000
DTEND;TZID=Europe/Amsterdam:20000101T130000
SUMMARY: Standaard documenten - Partymanager
LOCATION: maskedforprivacy - Klinkertstraat -
END:VEVENT
END:VCALENDAR
我尝试使用和不使用以下标头导出它：
header("Content-Type: text/calendar");
header("Content-Disposition: inline; filename=EPCalender.ics");
使用https://icalendar.org/validator.html#results验证格式会返回成功而不会发出任何警告。在Outlook中使用URL导入iCal非常有效。是否有任何属性我没有正确设置谷歌日历拒绝导入事件？
谢谢你！