Thanks for attending my talk "Advanced Date/Time Handling" at International PHP Conference 2012 Spring that I gave on June 4th, 2012. Here you can find some extra information about the talk if they are available. For this talk we have:


If you have any questions about the talk, feel free to contact me. My details are on the contact page.


The talks slides can be downloaded at time-ipc2012s.pdf



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Good talk. Many good examples.

Great samples. Good approach to the subject. I would like to see more examples of date arithmetic using new DateTime object (becouse this object is not commonly known) even without timezone mess - for example newyear or dst change.

Very good thought out talk, on a complex subject.

Interesting topic, showing how many problems can result from regular operations over time. You can learn how to store the DB information from different time zones.

What about merging date ranges?

i agree. very nice talk. thanks, derick. one question: is it possible to add virtually your own timezone? for example: my son is definetely living in a different timezone in the same flat :D I could then use the sublocation parameter: Europe/Berlin/Son.

This was a very good talk with very good examples. Great.

Good examples for all who has to deal with date and time information in different timezones.

Great talk with real world examples and easy to understand.

yes nice talk which displayed once again all the odds that one has to deal with when messing around with different time zones! Also thanks for the tip with the time zone database!

Interesting topic and very competent speaker. What scares me was the way DateTime objects allow to specify points in time, e.g. "next weekday in three month". Looks like what SQL tried for databases (should be usable for everybody) and where it failed miserably which makes it a mess now.

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