tests: Introduce platform checks

[MaxSem]

--PLATFORM--
bits: 64
os: !Windows

vs.

--SKIPIF--
<?php
if (PHP_INT_SIZE != 64) die('skip This test is 64bit only');
if (stripos('WIN', PHP_OS) === 0) die('skip This test cannot run on Windows');
?>

This is part of overall work on test speedup by reducing the
number of SKIPIF checks. Additional benefits are the tests getting
more readable and replacing code with metadata.

This change migrates Zend tests to the new system, the rest will be
fixed in subsequent patches.

[Girgias]

This is currently borked:

SKIP Test open_basedir configuration [tests/security/open_basedir_realpath.phpt] reason: only run on Windows
ERROR: Worker 2 reported unexpected E_WARNING: Undefined array key "php.Zend.tests" in /home/vsts/work/1/s/run-tests.php on line 3554

Could you also provide a patch to https://github.com/php/web-qa/blob/master/write-test.php adding the PLATFORM section?

[MaxSem]

This is currently borked:
[...]

Fixed.

Could you also provide a patch to https://github.com/php/web-qa/blob/master/write-test.php adding the PLATFORM section?

Sure, as soon as we're sure that the behavior of this one will not change. Note that even my previous QA docs patch is still unmerged.

[nikic]

I'm not convinced that this makes sense. This is inventing a new domain specific language for something that SKIPIF checks already express in a general and easy way. --EXTENSIONS-- was valuable primarily because it allows us not to load unnecessary shared objects, which is slow on Windows. This approach also isn't going to cover more involved cases like database extension skipifs, which are probably the ones that would benefit most from not running repeatedly.

[krakjoe]

I agree with Nikita. We're never going to be able to do away with SKIPIF without extending the DSL you have created here beyond reasonable, it would have to be capable of expressing so much that it would actually only serve to complicate things, be another thing to learn and not really provide any value.

[MaxSem]

The point was not to eliminate the skipifs, but to reduce their number to reduce their influence on performance. But oh well, you da maintainerz, you decide😁