replace secure.php.net with www.php.net

[Jordi Kroon (jordikroon)]

This PR normalises the links to php.net as a few variants live within the stubs.
At least we should move towards https not depend on secure.php.net. So if this change is too much, we can get rid of the second commit.

Please see commits 1 by 1:

Commit 1: replaces secure.php.net with www.php.net

LC_ALL=C find . -type f -exec sed -i '' 's/secure\.php\.net/www.php.net/g' {} +

Commit 2: replaces https://php.net with https://www.php.net

LC_ALL=C find . -type f -exec sed -i '' 's|https://php\.net|https://www.php.net|g' {} +

Commit 3: replaces http://php.net with https://www.php.net

LC_ALL=C find . -type f -exec sed -i '' 's|http://php\.net|https://www.php.net|g' {} +

Commit 4: fixes tests, intentionally using http:// here.

[Ivan Fedorov (isfedorov)]

Jordi Kroon (@jordikroon) That's a good point, but could you please clarify, what is a benefit of normalizing links to //www.php.net instead of //php.net (other than avoiding 301 redirect)? It's longer form and amount of required changes is huge (stubs have ~1300 occurrences of www.php.net while ~8800 of php.net). So I agree that links should be normalized, but I'd suggest to do it in a vice versa way. All existing www.php.net and secure.php.net convert to //php.net. Also please update related stubs check to verify that new added links are aligned with this rule (see PhpDocLinksCheck::checkLinks) and unit tests that will test this new change in PhpDocLinksCheck (see PhpDocLinksCheckTest). Oh, and please pay attention to https://github.com/JetBrains/phpstorm-stubs/blob/master/CONTRIBUTING.md#cache-files and avoid committing those Reflection*.json files.