Contributing Advent 9: Day of the week
This is another one in the Date/Time extension series. Bugs #63391 and #61599 both deal with PHP getting the Day of Week wrong in years before 1600. Technically I did not write the patch for this contribution, but I did add tests, verified it and merged it to all the four branches (PHP 5.4, 5.5, 5.6 and master).
However, it does seem that I introduced the bug in the first place. When writing the new date/time support about 7 years ago I was looking for an algorithm that would tell me the day of the week for any given (Gregorian calendar) date. Wikipedia has quite a good article on it. The article outlines the calculation of the century number. For the Gregorian calendar, that's quite straight forwards: 6 - (j % 4) * 2. For the Julian calendar it's not very difficult either. Although PHP uses the proleptic Gregorian calendar that I wrote about before, I mistakenly had used a formula that combined the Julian and Gregorian calendar calculations. This then resulted in wrong calculations before the year 1600. This is now corrected and ready for inclusion into PHP 5.4.24, 5.5.7, and later versions.
Life Line
Updated an estate_agent office
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
@bennuttall Are you at the Crucible this year again?
I walked 9.7km in 5h29m12s
Updated a gate
Staring Contest with a Squirrel
On my walk on the weekend, I sat down on a tree branch of a tree that had fallen over some time ago. Just listening to the birds.
Then after hearing rustling in the foliage above me, I looked up, and saw this chap staring at me.
#London #Photography #Nature #HampsteadHeath
I walked 3.0km in 41m38s
I walked 1.1km in 12m20s
Bluebell Carpet
I had a lovely walk on Hampstead Heath yesterday, finding all the nooks and crannies away from the busy paths.
This field of bluebells under the colourful tree was a stand-out quiet spot.
#London #Photography #Nature #HampsteadHeath
I walked 2.3km in 21m51s
Fix paths
Created a memorial
Created a bench
@Edent Seems like my Android stopped sending coordinates to @openbenches as well, which is surprising as I haven't updated anything as far as I'm aware. Could it be a problem with the reader in your side after the latest changes and the addition of the warning?
I walked 5.8km in 2h15m45s
I walked 1.7km in 17m46s
I walked 4.8km in 1h39m40s
Add the new Queen Elizabeth II garden.
Updated a bench and a crossing; Deleted 2 kerbs
Created 3 gates and a waste_basket
Created 6 benches
Created a bench; Updated 4 benches
Created 2 benches and a bicycle_parking; Updated a telephone and a waste_basket
I walked 10.3km in 2h34m24s
Shortlink
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