PHP解析Amazon EC2实例“launchTime” [英] PHP Parsing Amazon EC2 instance 'launchTime'

问题描述

当你描述你的EC2实例，你会得到一个XML节点： -

When you describe your EC2 instances, you get an XML node of:-

[launchTime] => 2011-10-14T09:22:37.000Z

我想使用这个命令用PHP，衡量秒的情况下已经对数，并采取行动。

I'd like to use this command with PHP, to measure the number of seconds the instance has been on and take actions.

在我看来，有一些方法来打破这种下来，包括爆炸和字符串搜索和正则表达式。但是，什么是的最佳的办法吗？

It seems to me there's a number of ways to break this down, including explodes and string searches and regex. But, what is the best way?

推荐答案

最后的答案：

好，退房后这个线程，我已经决定这种方法，因为这似乎返回一个准确的衡量只有一个：

Okay, after checking out this thread, I've decided on this approach as the only one that seems to return an accurate measure:

$dt = DateTime::createFromFormat('Y-m-d\TH:i:s.u\Z', $date);
$now = new DateTime();
echo ($now->getTimestamp() - $dt->getTimestamp())."\n";

尝试：

在PHP 5.3使用类（无'U'格式）：

In PHP 5.3 using classes (no 'U' format):

$dt = DateTime::createFromFormat('Y-m-d\TH:i:s.u\Z', $arr['launchTime']);
echo (new DateTime())->format('U');

在PHP 5.3使用过程调用（也就像最终的解决方案）：

In PHP 5.3 using procedural calls (also works like final solution):

$dt = date_create_from_format('Y-m-d\TH:i:s.u\Z', $arr['launchTime']);
$now = date_create();
echo ($now->getTimestamp() - $dt->getTimestamp());

在任何版本的使用的strtotime （返回错误的时间）：

In any version using strtotime (return wrong time):

date_default_timezone_set('UTC');
echo time() - strtotime($arr['launchTime']);

这篇关于PHP解析Amazon EC2实例“launchTime”的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！