Updated PHP mode to support PHP8.1 syntax

[jeroenpost86]

Issue #, if available:
#4439

Repeating 5834d8f

Description of changes:
Added support for PHP 8.1 syntax. This is only for the syntax checker, I did not add anything for the autocomplete function.

Demo here: https://onlinephp.io/c/php8.1-aceeditor-demo

Rebuild parser that I used:

<?php

const GRAMMAR_REPO  = 'https://raw.githubusercontent.com/nikic/PHP-Parser';
const PARSER_REPO  = 'https://raw.githubusercontent.com/niklasvh/php.js';

const GRAMMAR_FILE = GRAMMAR_REPO .'/master/grammar/php7.y';
const TOKENS_FILE  = GRAMMAR_REPO .'/master/grammar/tokens.y';
const TMP_FILE     = './tmp_parser.jsy';
const RESULT_FILE  = './tmp_parser.js';

file_put_contents('kmyacc.js.parser', file_get_contents(PARSER_REPO .'/master/grammar/kmyacc.js.parser'));

$tokens = file_get_contents(TOKENS_FILE);
$grammarCode = file_get_contents(GRAMMAR_FILE);

$tokens .= "%token T_BAD_CHARACTER
%token T_COMMENT
%token T_DOC_COMMENT
%token T_OPEN_TAG
%token T_OPEN_TAG_WITH_ECHO
%token T_CLOSE_TAG
%token T_WHITESPACE";

$grammarCode = str_replace('%tokens', $tokens, $grammarCode);

file_put_contents(TMP_FILE, $grammarCode);

echo 'Building parser. Output: "',
trim(shell_exec('php PHP-Yacc/bin/phpyacc -m kmyacc.js.parser ' . TMP_FILE . ' 2>&1')),
'"', "\n";

preg_match_all('/T_\w+/', $tokens, $matches);
foreach ($matches[0] as $match)
    echo '"' . $match . '",';

echo "\n". str_repeat('-', 45). "\n";
foreach ($matches[0] as $match)
    if (NULL != constant($match))
        echo 'PHP.Constants.' . $match . ' = ' . constant($match) . "\n";

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

Merging #4696 (f169ca8) into master (7cc98c7) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4696      +/-   ##
==========================================
+ Coverage   71.19%   71.24%   +0.05%     
==========================================
  Files         553      553              
  Lines       55585    55585              
  Branches    10391    10391              
==========================================
+ Hits        39571    39599      +28     
+ Misses      16014    15986      -28     

Flag	Coverage Δ
unittests	71.24% <ø> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
lib/ace/range.js	85.51% <0.00%> (+0.68%)	⬆️
lib/ace/editor.js	81.61% <0.00%> (+1.90%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7cc98c7...f169ca8. Read the comment docs.