Drop PHP 7

[phil-davis]

• drop PHP 7.4 8.0 and 8.1 support
• apply cs-fixer and rector automated changes
• make changes to test code and real code to get phpstan to pass

[phil-davis]

fopen(foo.json): Failed to open stream: No such file or directory

I have no idea how the tests found foo.json previous to the changes in this PR. It doesn't seem to exist as a fixture anywhere in this repo. The tests are broken now, but they passed in master that has PHPunit9. This has PHPunit11. No idea if that is relevant. I get the same stuff failing locally on my laptop.

[phil-davis]

git log --all --full-history -- "*foo*"

Finds nothing. So there never has been any file in this repo with "foo" in its name. And I don't see any code that will create foo.json or foo.ics. So how did this ever work?

Edit add:

The test cases actually expected the Cli to exit with status "2". So they did expect that a problem would be reported - the input file does not exist. Due to changes in PHPunit11, the test code was now exposed to the PHP warning from fopen. So I needed to handle that in the test code, and make a small addition to the real code to throw an InvalidDataException when fopen returns false. That is then handled causing exit 2, the previous behavior.

[codecov]

Codecov Report

❌ Patch coverage is 97.81818% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.66%. Comparing base (85d5d6f) to head (013f8bb).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/TimezoneGuesser/FindFromTimezoneMap.php	0.00%	2 Missing ⚠️
lib/Cli.php	95.65%	1 Missing ⚠️
lib/PHPUnitAssertions.php	90.00%	1 Missing ⚠️
lib/Property/Boolean.php	0.00%	1 Missing ⚠️
lib/TimezoneGuesser/FindFromTimezoneIdentifier.php	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #767      +/-   ##
============================================
- Coverage     98.69%   98.66%   -0.04%     
+ Complexity     1891     1757     -134     
============================================
  Files            71       71              
  Lines          5300     5163     -137     
============================================
- Hits           5231     5094     -137     
  Misses           69       69              

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[marclaporte]

Will this lead to a new major release? (does dropping old PHP versions trigger SemVer?)

[phil-davis]

Will this lead to a new major release? (does dropping old PHP versions trigger SemVer?)

Normally I would just make a minor release for dropping PHP versions. composer looks after knowing which version suits the PHP version(s) supported by a project.
But there are also a lot of changes/enhancements in master that have parameter and return type definitions, and other PHPdoc stuff. So I think that consumers might find it a bit of effort to implement, particularly if they are currently calling methods with wrong parameter types that have been coerced by PHP, but now the types will be strictly enforced.

So I will make this a major version. That gives consumers the option to specifically choose to update.