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phpdatetimesubstringrfc3339

Trim string before character in PHP

I have this date/time string

$dateTime = '2016-11-01T16:00:59:999000Z';

I would like to be able to remove the 3 digits before the Z. Not really sure how to do that. I was trying to rework this:

substr($dateTime, 0, -3);

but couldn't figure out how to make it trim before the Z and not at the end of the string.

Solution 
  • preg_replace("/\d{3}(Z)($)?/", "$1$2", "2016-11-01T16:00:59:999000Z");
// Result: 2016-11-01T16:00:59:999Z

    Should do the job even if Z will be not in the end of the string.