PHP 解析 iCal 提醒字符串

发布于 2024-10-06 04:09:17 字数 356 浏览 0 评论 0原文

我目前正在解析 iCal 提醒字符串,类似于: -P14DT0H0M0S

使用 PHP,我如何能够解析字符串的元素,以便如果我有:

<?
 $reminder = "-P14DT0H0M0S"  // somehow output to show "-2 weeks" or eve "-14 days"

             //  OR  //

 $reminder = "-P0DT3H0M0S"  // somehow output to "-3 hours" 

 // etc...

对此的任何帮助都是伟大的。我有点不知道从哪里开始。

非常感谢!

I'm currently working on parsing iCal reminder strings, similar to: -P14DT0H0M0S

Using PHP, how might I be able to parse the elements of the string so that if I had:

<?
 $reminder = "-P14DT0H0M0S"  // somehow output to show "-2 weeks" or eve "-14 days"

             //  OR  //

 $reminder = "-P0DT3H0M0S"  // somehow output to "-3 hours" 

 // etc...

Any help on this would be great. I'm kind of stuck on where to begin.

Many thanks!

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评论(3

浮华 2024-10-13 04:09:17

我不熟悉这种格式,几乎可以肯定有一个可用的库,但看起来一个简单的正则表达式就可以完成这里的工作。

像这样的东西:

$matches = array();
if (preg_match('/^-P(\d+)DT(\d+)H(\d+)M(\d+)S$/', $reminder, $matches))
{
  // matched pattern, elements captured with () will be stored in $matches[1..]
  $days = $matches[1];
  $hours = $matches[2]; 
  $minutes = $matches[3];
  $seconds = $matches[4];
}

I'm not familiar with the format, and there's almost certainly a library available for this, but it looks like a simple regex would do the job here.

Something like:

$matches = array();
if (preg_match('/^-P(\d+)DT(\d+)H(\d+)M(\d+)S$/', $reminder, $matches))
{
  // matched pattern, elements captured with () will be stored in $matches[1..]
  $days = $matches[1];
  $hours = $matches[2]; 
  $minutes = $matches[3];
  $seconds = $matches[4];
}
酒儿 2024-10-13 04:09:17

不确定您的项目背景或最终结果是什么,但这可能会有所帮助:

Not sure what the background of your project or your end result is, but this may help:

衣神在巴黎 2024-10-13 04:09:17

谷歌日历可以完全删除时间部分并返回类似“-P7D”的内容,所以我进行了调整
therefromhere 的正则表达式来处理这个问题。

preg_match('/^-P(\d+)DT?(\d+)?H?(\d+)?M?(\d+)?S?$/', $reminder, $matches);

Google calendar can drop time part completely and return something like '-P7D' so I have tweaked
therefromhere's regexp to deal with that.

preg_match('/^-P(\d+)DT?(\d+)?H?(\d+)?M?(\d+)?S?$/', $reminder, $matches);
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