从数据库创建的动态ical不起作用

Question

我在PHP 5和MySQL中构建了一个站点,其中包含一个跟踪预定照片拍摄的表格.我想将那些预定的"事件"的提要推送到一个文件中.

我最初问过这个问题并得到了S. Gehrig的一个很好的答案.每当我在Dreamweaver中手动调整文件时,我都会有一个示例文件工作,并定期在Google日历中更新.但是,现在我已经从数据库中添加了动态PHP,它将无法正常工作.

这是PHP:

<?php
require_once('../../_includes/initialize.php');

$ical = " BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN ";

$slots = Slot::find_all();
foreach($slots as $slot) {
    $job = Job::find_by_id($slot->job_id);

    $start_stamp = strtotime($slot->start);
    $end_stamp = strtotime($slot->endtime);
    $dtstart = gmdate('Ymd', $start_stamp).'T'. gmdate('His', $start_stamp) . "Z"; // converts to UTC time
    $dtend = gmdate('Ymd', $end_stamp).'T'. gmdate('His', $end_stamp) . "Z"; // converts to UTC time

    $summary = $job->title;

    $ical .= " BEGIN:VEVENT
    UID:" . $slot->id . "@homewoodphoto.jhu.edu
    DTSTAMP:" . gmdate('Ymd').'T'. gmdate('His') . "Z
    DTSTART:" . $dtstart . "
    DTEND:" . $dtend . "
    SUMMARY:" . $summary . "
    END:VEVENT ";
}

$ical .= " END:VCALENDAR";

//set correct content-type-header
header('Content-type: text/calendar; charset=utf-8');
header('Content-Disposition: inline; filename=homewoodphoto_master.ics');
echo $ical;
exit;

?>

据我所知,这个文件的输出与我工作的手动硬编码版本完全相同.任何人都可以看到为什么这不起作用????

PS这是正在运行的文件的代码 - 我刚刚将它发布在我的服务器上,并通过Google日历中的URL订阅.当我在第二次活动中硬编码时,它很快就出现在谷歌日历中.

<?php

$ical = "BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN

BEGIN:VEVENT
UID:" . md5(uniqid(mt_rand(), true)); . "@yourhost.test
DTSTAMP:" . gmdate('Ymd').'T'. gmdate('His') . "Z
DTSTART:20090925T170000Z
DTEND:20090928T035959Z
SUMMARY:Bastille Day Party
END:VEVENT

BEGIN:VEVENT
UID:" . md5(uniqid(mt_rand(), true)); . "@yourhost.test
DTSTAMP:" . gmdate('Ymd').'T'. gmdate('His') . "Z
DTSTART:20090929T170000Z
DTEND:20090930T035959Z
SUMMARY:Camping Trip
END:VEVENT

END:VCALENDAR";

//set correct content-type-header
header('Content-type: text/calendar; charset=utf-8');
header('Content-Disposition: inline; filename=calendar.ics');

echo $ical;

exit;

?>

救命!

一位评论者建议我通过删除标题并回显$ ical var来进行测试.以下是该测试的结果,为方便起见添加了换行符:

BEGIN:VCALENDAR 
VERSION:2.0 
PRODID:-//hacksw/handcal//NONSGML v1.0//EN 
BEGIN:VEVENT 
UID:21@homewoodphoto.jhu.edu 
DTSTAMP:20090929T212141Z 
DTSTART:20091001T230000Z 
DTEND:20091001T230000Z 
SUMMARY:little title 
END:VEVENT 
BEGIN:VEVENT 
UID:22@homewoodphoto.jhu.edu 
DTSTAMP:20090929T212141Z 
DTSTART:20090926T230000Z 
DTEND:20090927T010000Z 
SUMMARY:A big photo shoot 
END:VEVENT 
BEGIN:VEVENT 
UID:23@homewoodphoto.jhu.edu 
DTSTAMP:20090929T212141Z 
DTSTART:20091003T230000Z 
DTEND:20091004T010000Z 
SUMMARY:A big photo shoot 
END:VEVENT 
END:VCALENDAR

谢谢!

Answer 1

对于通过搜索偶然发现这一点的人来说,可能并不清楚问题是如何解决的.基本上,iCal规范要求\ r \n用于换行符,并且在行的开头没有空格,这是在脚本中修复的以使其工作的内容.

在使用ical时,我发现以下3个验证器最有帮助:

最基本的(错过空白):http://severinghaus.org/projects/icv/？url =

这个会抓到空白:http://icalvalid.cloudapp.net/Default.aspx

这个会抓住其他人没有的东西,但几乎是太严格了:http://arnout.engelen.eu/icalendar-validator

此外,所有不同元素的最佳文档:http://www.kanzaki.com/docs/ical/

Answer 2

感谢 Mohammad 的帮助，我们推断是向 ics 文件添加空格的缩进代码导致了错误。M 建议使用 \n 换行符不起作用，但手动按 Enter 键创建换行符，但不缩进下一行，似乎已经完成了。这是有效的代码：

<?php
require_once('../../_includes/initialize.php');

$ical = "BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
";

$slots = Slot::find_all();
foreach($slots as $slot) {
$job = Job::find_by_id($slot->job_id);

$start_stamp = strtotime($slot->start);
$end_stamp = strtotime($slot->endtime);
$dtstart = gmdate('Ymd', $start_stamp).'T'. gmdate('His', $start_stamp) . "Z"; // converts to UTC time
$dtend = gmdate('Ymd', $end_stamp).'T'. gmdate('His', $end_stamp) . "Z"; // converts to UTC time

$summary = $job->title;

$ical .= "BEGIN:VEVENT
UID:" . $slot->id . "@homewoodphoto.jhu.edu
DTSTAMP:" . gmdate('Ymd').'T'. gmdate('His') . "Z
DTSTART:" . $dtstart . "
DTEND:" . $dtend . "
SUMMARY:" . $summary . "
END:VEVENT
";
}

$ical .= "END:VCALENDAR";

//set correct content-type-header
header('Content-type: text/calendar; charset=utf-8');
header('Content-Disposition: inline; filename=homewoodphoto_master.ics');
echo $ical;
exit;
?>