The Y2K7 problem
Right, that "Y2K7" is not a typo. It "refers to the Year 2007 problem, caused by a US-mandated change to Daylight Saving Time" ( wikipedia ). From this year the US (and Canada) changed the dates on when daylight saving time is active. DST now starts three weeks earlier, and ends one week later. This causes quite a lot of problems with software that hard coded those rules. On Linux (and other Unix-like operating systems) this can be remedied by updating the zoneinfo information - check your Operating System's documentation on how to do that.
PHP before PHP 5.1.0 relies on the Operating System to provide time zone information, while PHP versions 5.1.0 and higher come with a bundled time zone database. The database that ships with PHP 5.1.0 already covers the changes in the US and Canada, however, the US and Canada are not the only places changing rules. Many places on earth change those rules all the time which means PHP's database needs to be updated as well.
Every PHP version comes with the latest release of the time zone database at the moment PHP is released. However, it is also possible to just update this data by installing the PECL extension timezonedb . This extension is released whenever a new version of the Olson database becomes available. The current version is 2007c (2007.3).
Comments
Hey Derick, That does seem to be a problem, but I wonder how many sites/systems will be affected.
Its a lesson us brazilians have already been through, because over here we have no specific date for begining or end of the daylight savings time. And this year we had a real mess because only half (or less) of the states actually "accepted" the change, so we had an internal timezone going. Real mess as you can see.
Well great post, interesting stuff, will you be here for this year's PHP Conf?
Greetz!
Life Line
Updated a waste_basket
Created 11 benches, 2 life_rings, and 3 other objects; Updated 8 benches and a waste_basket; Deleted a bench and a log; Confirmed a cafe
I walked 7.8km in 1h52m27s
Tomorrow we have elections in the UK!
Lots of local authorities, all London Councils, the Welsh Senedd, and the Scottish Parliament.
Don't forget to vote if you have the right.
I get to vote for myself again 😎.
Benches, and corrections for the QE II Gardens
Addresses on College Road
Created 2 main entrances and an entrance; Updated an entrance, a residential building, and a house building
Created an apartments building and a main entrance
I walked 9.5km in 2h21m10s
Created a waste_basket
I walked 6.6km in 1h13m23s
On my walk from Aylesbury to Princes Risborough I spotted a few new bird species. I didn't get all the best photos though!
A Common Buzzard, a Yellow Wagtail, a Greater White throat, and a Green Woodpecker.
#photography #Birds #BirdPhotogaphy #BirdsOfMastodon #nature #Buckinghamshire
Updated an alcohol shop
I walked 9.4km in 1h58m25s
Updated 2 benches
Created a bench; Updated a bench
I hiked 19.0km in 4h35m50s
I hiked 19.0km in 4h35m50s
I walked 6.8km in 1h15m36s
Updated an estate_agent office
I walked 4.1km in 55m33s
I walked 1.1km in 10m05s
My First Lapwing!
I went to the London Wetland Centre yesterday, for a day out in nature.
While hiding in a hide, this chap and a friend showed up starting to forage for grubs.
#BirdPhotography #BirdsOfMastodon #Photography #Birds #London #Nature
Created a waste_basket; Updated a cafe and a restaurant; Confirmed an estate_agent office
I walked 6.6km in 1h8m53s
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