Update hero section styles according to BEM methodology (#1107)

OG meta tags by default (#1027)

Fix #981

Add links to PHP Foundation with a Donate button (#821)

Co-authored-by: Derick Rethans <github@derickrethans.nl>
Co-authored-by: Lu Fei <52o@qq52o.cn>

Enhancement: Enable `blank_line_after_opening_tag` fixer (#875)

Fix: Remove vim instruction (#880)

Enhancement: Enable `trailing_comma_in_multiline` fixer (#647)

* Enhancement: Enable and configure trailing_comma_in_multiline fixer

* Fix: Run 'make coding-standards'

Remove indentation in array arguments (#860)

Add mastodon link on mainpage (#837)

Add rel=me verification link for Mastodon (#833)

PHP 8.3 released! (#825)

List syntax (#529)

List (array destructuring) assignment should be declared using the configured syntax.

PHP 8.2 Release page (#728)

Add required `alt` attribute to hero header image on homepage

Closes GH-693.

Enhancement: Enable `binary_operator_spaces` fixer

Closes GH-667.

Enhancement: Enable and configure `concat_space` fixer

Closes GH-657.

Enhancement: Enable `array_syntax` fixer

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

Closes GH-659.

Enhancement: Enable `no_extra_blank_lines` fixer

Closes GH-646.

Enhancement: Enable `single_space_after_construct` fixer

Closes GH-640.

Enhancement: Enable `indentation_type` fixer

Closes GH-622.

Fix: Heredoc syntax

Closes GH-564.

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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Add void return types

Add void return type to functions with missing or empty return statements.

Closes GH-535.

Add home page social preview (#524)

Improve homepage hero design

Co-authored-by: Kamil Tekiela <tekiela246@gmail.com>
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Closes GH-459.

Fixed invalid HTML