Enhancement: Enable `random_api_migration` fixer

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

Closes GH-699.

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 `constant_case` fixer

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

Closes GH-660.

Add void return types

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

Closes GH-535.

Swap uses of _SERVER[DOCUMENT_ROOT] for __DIR__

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

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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logo page improvements

Put back chunks of the old logo page that I'm nostalgic for.
Use print_image() function for rendering img tags as before.
Remove some now-unused CSS.

Keep old logos for posterity

Fix text

Using grid to images; Better messages

Change to use internal URI

Licensing Creative Commons

Logo images in new format and update /logos page to Licensing Creative Commons

Kill off XHTML

Long live HTML5! =)

added class to logo list and style to remove list style type

Change multiple checks and references from 'www.php.net' to plainly 'php.net' to reduce 301's, fix a few broken items, and ease a bit of the load off the server (multiple connections per page when st

Change multiple checks and references from 'www.php.net' to plainly 'php.net' to reduce 301's, fix a few broken items, and ease a bit of the load off the server (multiple connections per page when statically referenced as 'www.php.net.'

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Add current config option (ignored in old-web), and FIXME placeholders for pages
not in any menu yet

This logo isn't used anymore (and they can host the successor on their site)

logos@php.net does no longer exist
licensing questions should be sent to group@

spelling/typo

XHTML fixes

Fix closing tag

incredible that we use an image to display an asterisk and a no_star() function to display an empty table cell

Logo should not be used looking as an endorsement (fix my English if you know some better wording)