Replace languages.inc globals with I18n\Languages consts (#1121)

The include/languages.inc file was not removed as it's used in other
repositories. It should be removed after migration.

Replace languages.inc globals with I18n\Languages consts (#1121)

The include/languages.inc file was not removed as it's used in other
repositories. It should be removed after migration.

Tests were added to ensure that the global variables and the constants
are in sync with each other.

Signed-off-by: Maurício Meneghini Fauth <mauricio@mfauth.net>

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Remove useless repo parameter (#1095)

Add function for translation of UI elements (#1057)

Co-authored-by: haszi <haszika80@gmail.com>

Link to GH issues instead of bugs.php.net for documentation issues (#1078)

Replace MYPHPNET global var with the UserPreferences class (#1071)

Add last modification info and contributor list (#977)

Co-authored-by: haszi <haszika80@gmail.com>

Move contribution links to the bottom of the documentation pages (#973)

Co-authored-by: haszi <haszika80@gmail.com>

Fix: Remove vim instruction (#880)

Fix: Remove emacs instruction (#876)

Enhancement: Enable `trailing_comma_in_multiline` fixer (#647)

* Enhancement: Enable and configure trailing_comma_in_multiline fixer

* Fix: Run 'make coding-standards'

Fix: Inline variables (#856)

Enhancement: Enable `void_return` fixer (#661)

* Enhancement: Enable void_return fixer

* Fix: Run 'make coding-standards'

Enhancement: Enable `new_with_braces` fixer (#697)

Fix autoload redirect failure (#788)

Improve code for language selection (#709)

Remove unnecessary code (#708)

Introduce UserNote DTO and refactor Sorter (#594)

Enhancement: Enable `binary_operator_spaces` fixer

Closes GH-667.

Enhancement: Enable `array_syntax` fixer

Co-authored-by: MathiasReker <mathias@reker.dk>

Closes GH-659.

Enhancement: Enable `strict_param` fixer

We set strict param to false to ensure current behavior,
except for two cases where it is safe to go with true.

Closes GH-658.

Enhancement: Include `*.inc` files (with exceptions)

Closes GH-662.

Enhancement: Use PSR-4 autoloader (#604)

Multiple micro-optimizations

* Replace `ob_get_contents();ob_clean()` with `ob_get_clean()`

`ob_get_clean()` is equivalent to `ob_get_contents()` followed by `ob_clean()`.

Multiple micro-optimizations

* Replace `ob_get_contents();ob_clean()` with `ob_get_clean()`

`ob_get_clean()` is equivalent to `ob_get_contents()` followed by `ob_clean()`.

* Replace `intval()` calls with `(int)` type cast

This is a micro-optimization because `intval()` is a function call, and the type cast is about 6 times fast.

* Replace `preg_replace` call that could be done with an `rtrim()` call

In `./error.php`, there is a `preg_replace('!/+$!', '', $URI);` call that essentially is equivalent to `rtrim()`, that both calls removing trailing slash characters in `$URI`.
The `rtim()` call is more legible and faster.

* Combine consecutive `str_replace` calls to a single `str_replace` call

* Use short ternary operator where possible

Improves code readability.

* Cascade various `else` statements where possible

Cleans up the code by removing unnecessary `else` blocks and moving the code to the parent context if the previous `if` block exits the function by either terminating the script, or with a `return` statement.

* Combine multiple `isset()` calls to a single `isset()`

`isset()` accepts multiple parameters and returns `true` only if all of the parameters are `isset`. It makes sense to combine multiple individual `isset` calls to a single call for better readability.

* Replace `for` loop with a `foreach` loop

* Remove unnecessary character escapes in regular expressions

Regular expression special characters are context-sensitive. For example, special characters such as `.` are not considered special within square braces (`[]`).
This removes several of such instances that certain characters are escaped, but it is not strictly necessary within the context. This improves the readability of the expression.

See more information at [PHP.Watch: Writing better Regular Expressions in PHP](https://php.watch/articles/php-regex-readability#reduce-escape)

* Remove unnecessary break statement

* Remove unnecessary PHP close tags

* Remove redundant JSON_ERROR_NONE check

Remove unnecessary `json_last_error() == JSON_ERROR_NONE` where the decoded object is inspected already.

Closes GH-603.

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Remove useless function manual_header()

Closes GH-584.

Refactor manual_notes() (#592)