如何将日期时间字符串转换为UTC？

Question

How can i convert a datetime string like this: 2012-09-03 22:00 US Estern to UTC timezone?

Answer 1

You should look at the DateTime object and its related functions in the documentation.

If your input date is already in a string format, DateTime::createFromFormat() will help you create an epoch-type integer date the object can work with. After that, it's just getTimezone() and setTimezone().