The problem of time calculation

How do you calculate their time difference in such a format?
2014-09-22t15:53:20z
2014-09-22t13:53:20z

Reply to discussion (solution)

What does T and Z mean?

Do not know, this format is required for this, is the Greenwich standard when

T and Z are the date type of the XML Schema Z means UTC time + 8 hours is the GMT

Calculate Time Difference
$ret = Strtotime (' 2014-09-22t15:53:20z ')-strtotime (' 2014-09-22t13:53:20z ');//It would have been minus 8 hours.
Var_dump ($ret);

Just a function call problem
Strtotime

To be converted into a timestamp to be calculated properly.

$atime = ' 2014-09-22t15:53:20z '; $btime = ' 2014-09-22t13:53:20z '; $time = Strtotime ($atime)-Strtotime ($btime); echo $ TIME/60/60;

Convert to time stamp and compare

echo gmdate (' H:i:s ', strtotime (' 2014-09-22t15:53:20z ')-strtotime (' 2014-09-22t13:53:20z '));

02:00:00

PHP Date Processing Detailed http://www.phpthinking.com/archives/330

are converted into timestamps, in comparison

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