在 Contact Form 7 Wordpress 插件的输出电子邮件中集成 ICS 文件链接

Question

我想使用用户输入到我的 ContactForm7 表单来构建一个 ICS 文件链接，然后将此 ICS 文件链接包含在表单的电子邮件输出到我的收件箱中。

注意：一个 ICS 文件是一个链接，可以被 Outlook、Google 日历、Apple 日历等读取...

    // build an ICS file using this class
    class ICS {
        var $data;
        var $name;

        function ICS($start,$end,$name,$description,$location) {
            $this->name = $name;
            $this->data = "BEGIN:VCALENDAR\nVERSION:2.0\nMETHOD:PUBLISH\nBEGIN:VEVENT\nDTSTART:".date("Ymd\THis\Z",strtotime($start))."\nDTEND:".date("Ymd\THis\Z",strtotime($end))."\nLOC\
    ATION:".$location."\nTRANSP: OPAQUE\nSEQUENCE:0\nUID:\nDTSTAMP:".date("Ymd\THis\Z")."\nSUMMARY:".$name."\nDESCRIPTION:".$description."\nPRIORITY:1\nCLASS:PUBLIC\nBEGIN:VALARM\nTRIGGE\
    R:-PT10080M\nACTION:DISPLAY\nDESCRIPTION:Reminder\nEND:VALARM\nEND:VEVENT\nEND:VCALENDAR\n";
        }
        function save() {
            file_put_contents($this->name.".ics",$this->data);
        }
        function show() {                                                                               
            return $this->data;
        }
    }

    // add action before_send_mail
    add_action( 'wpcf7_before_send_mail', 'before_send_mail' );

    // build the ICS file here and include it in the email to my inbox
    function before_send_mail( $wpcf7 ) {

        private $ics_link;

        // call the ICS class instance
        $event = new ICS("2023-03-30 16:00","2023-03-30 17:00","Test Event","This an event made to test","GU1 1AA");
        
        // Add the ICS file string
        $ics_link = $event->show();

        // CAPTURE INSTANCE OF WPCFY CLASS AND ADD ICS FILE LINK TO EMAIL BODY 
        


    }

NNB：我从这个 StackOverflow 页面获得了大部分 ICS 文件类..

如何在给定的日期范围和时间使用 PHP 生成 .ics 文件