$event = array( "title" => "北海道旅行", "description" => "ぶらり旅", "place" => "北海道", "start_date" => "20200909T122530", "end_date" => "20200910T230030" ); $url = "http://www.google.com/calendar/event?" ."action=" ."TEMPLATE" ."&text=" . $event["title"] ."&details=" . $event["description"] ."&location=" . $event["place"] ."&dates=" . $event["start_date"]. "/". $event["end_date"]; オプションの内容は text 予定タイトル de