Unix Epoch and PHP's calendar system
I just saw a commit flying past as a response to PHP bug #50155. While right now it is proper to define the Unix Epoch at "1970-01-01 00:00:00 UTC", UTC wasn't actually defined until 1972. So it would be more correct to define the Unix Epoch as "the number of seconds elapsed since midnight proleptic Coordinated Universal Time (UTC) of January 1, 1970, not counting leap seconds." (from Wikipedia). What the bit "not counting leap seconds" means, I've already explained before in Leap Seconds and What To Do With Them.
Similarly, PHP's internal calendar is the ISO 8601 calendar. This is a modification of the proleptic Gregorian calendar. The Gregorian calendar implements the current set of leap years every 4 years, but not every 100 years, but again every 400 years (to get to an average year length of 365.2425 days). Obviously this calendar is only in use since 1582 (some countries adopted it as late as the 1900s), so using days like 1066-10-14 in the Gregorian calendar makes little sense because that calendar didn't exist back then. Now, PHP's ISO 8601-based calendar even modifies the Gregorian calendar by including the year 0. The Gregorian calendar goes straight from -1 to 1 which is a pain to do proper date calculations with. Therefore the ISO 8601 calendar uses Astronomical year numbering.
Life Line
Merged pull request #1029
Reflow some comments
Add comments, add end of file newlines, fix php 8.5 compilation
Benchmark Xdebug performance
Merged pull request #1051
PHP 8.6: printf() is now optimised out if it only uses %s and %d (and…
PHP 8.6: The object IDs of objects changed in tests
PHP 8.6: ZSTR_INIT_LITERAL() no longer takes non-literals, so use zen…
PHP 8.6: WRONG_PARAM_COUNT has been removed in favour of zend_wrong_p…
PHP 8.6: zval_dtor() has been deprecated in favour of zval_ptr_dtor_n…
Update test for version constraints, as well as the error messages
I walked 7.4km in 1h38m15s
I just watched an interesting and lovely documentary on BBC Four: The Magical World of Moss.
It's on the iPlayer for another month:
https://www.bbc.co.uk/programmes/m001hqthI walked 8.2km in 1h26m34s
Merge branch 'xdebug_3_5'
Document to use PIE instead of PECL in the README
I walked 9.2km in 1h45m44s
I walked 10.1km in 1h40m23s
In more info innocent times, the hat riots caused some spankings...
100 Years Ago Men and Boys Fought on the Streets of New York Over Wearing Straw Hats Past Summer | The New York Public Library
https://www.nypl.org/blog/2022/09/23/straw-hat-riots-nyc
Shortlink
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