Enhancement: Enable `single_space_after_construct` fixer

Closes GH-640.

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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Fix: Remove duplicate key-value pairs (#565)

Remove 'oop4' redirect, because it's 2022

Add shortcuts for enum/enums

Fix ext/oci redirections (#490)

Redirect old to new OCI-Lob and OCI-Collection URLs

Closes GH-488.

Add redirect for php.net/GH-123

Redirect `php.net/GH-123` to the corresponding issue or pull request
on php/php-src. This is part of https://wiki.php.net/rfc/github_issues,
but is al

Add redirect for php.net/GH-123

Redirect `php.net/GH-123` to the corresponding issue or pull request
on php/php-src. This is part of https://wiki.php.net/rfc/github_issues,
but is also useful independently for pull request references.

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Handle ?:, ??, and ??= in index.php

Add search aliases for ?:, ??, and ??=

Remove load checker (#404)

We do not use mirrors anymore, thus this is irrelevant.

Replace references to git.php.net (#396)

Display custom 404 page when legacy manuals found

Closes GH-385.

error redirects for "fn" and "arrow" to Arrow Functions manual page

Cleanup version.inc

With this diff, version.inc will ONLY export one "variable" named
$RELEASES which will continue to have the same format as previous.

It will also export a he

Cleanup version.inc

With this diff, version.inc will ONLY export one "variable" named
$RELEASES which will continue to have the same format as previous.

It will also export a helper method named release_get_latest()
for quickly accessing the most recent version published.

All other globals previously exported by this function are
no longer used on web-php.

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Swap uses of _SERVER[DOCUMENT_ROOT] for __DIR__

2/4 - Update remaining except archives/ and release/.

Swap uses of _SERVER[DOCUMENT_ROOT] for __DIR__

1/n - Update / and /include/ only.

Remove references, redirects, and selection of mirrors

Remove unused legacy reST redirections

The php.net/reST pages once served some source code files. It has been
removed via 74bc9e6ad77fb860ae8e171d46b4914a3737d7a9 in 2013 so these
re

Remove unused legacy reST redirections

The php.net/reST pages once served some source code files. It has been
removed via 74bc9e6ad77fb860ae8e171d46b4914a3737d7a9 in 2013 so these
redirections are most likely not relevant anymore for PHP.net audience.

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friendlier error page for manual pages under inactive languages (fix bug #77637)

Regular PHP 5 or even PHP 4 downloads are no longer available

Update some shortcuts

Trim trailing whitespace

This patch cleans all redundant trailing whitespace across the
repository except for the icalendar files.

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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Added phpXXnews links for the 7.0 branches