Adjust registering of custom fixers for PHP 8.0+ only

[paulbalandan]

Description
php-cs-fixer recently adjusted the return types of its Preg methods. Yes, that class is internal but cs-config depended on that. With the return type change, it used the native preg_* functions instead. Since cs-config needs ^8.0.1 the fix won't work with 7.4.

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[kenjis]

What happened when we (or contributors) use PHP 7.4?

[paulbalandan]

If you are using FixerGenerator to register custom fixers, it will always error that the vendor namespace is not valid.

[kenjis]

Until we stop supporting PHP 7.4, I guess the only way is to fix the version of php-cs-fixer so that PHP 7.4 does not cause the error?

$ php -v
PHP 7.4.33 (cli) (built: Jun 17 2023 06:48:34) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Xdebug v3.1.5, Copyright (c) 2002-2022, by Derick Rethans
    with Zend OPcache v7.4.33, Copyright (c), by Zend Technologies

$ composer cs-fix
> Composer\Config::disableProcessTimeout
> php-cs-fixer fix --ansi --verbose --diff --config=.php-cs-fixer.user-guide.php

In FixerGenerator.php line 55:
                                                         
  [RuntimeException]                                     
  Vendor namespace "Nexus\CsConfig\Fixer" is not valid.  
                                                         

Exception trace:
  at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/nexusphp/cs-config/src/FixerGenerator.php:55
 Nexus\CsConfig\FixerGenerator::create() at /Users/kenji/work/codeigniter/official/CodeIgniter4/.php-cs-fixer.user-guide.php:41
 include() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/src/Console/ConfigurationResolver.php:954
 PhpCsFixer\Console\ConfigurationResolver::separatedContextLessInclude() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/src/Console/ConfigurationResolver.php:264
 PhpCsFixer\Console\ConfigurationResolver->getConfig() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/src/Console/ConfigurationResolver.php:602
 PhpCsFixer\Console\ConfigurationResolver->getFormat() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/src/Console/ConfigurationResolver.php:443
 PhpCsFixer\Console\ConfigurationResolver->getReporter() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/src/Console/Command/FixCommand.php:246
 PhpCsFixer\Console\Command\FixCommand->execute() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/symfony/console/Command/Command.php:298
 Symfony\Component\Console\Command\Command->run() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/symfony/console/Application.php:1040
 Symfony\Component\Console\Application->doRunCommand() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/symfony/console/Application.php:301
 Symfony\Component\Console\Application->doRun() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/src/Console/Application.php:90
 PhpCsFixer\Console\Application->doRun() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/symfony/console/Application.php:171
 Symfony\Component\Console\Application->run() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/friendsofphp/php-cs-fixer/php-cs-fixer:101
 include() at /Users/kenji/work/codeigniter/official/CodeIgniter4/vendor/bin/php-cs-fixer:115

fix [--path-mode PATH-MODE] [--allow-risky ALLOW-RISKY] [--config CONFIG] [--dry-run] [--rules RULES] [--using-cache USING-CACHE] [--cache-file CACHE-FILE] [--diff] [--format FORMAT] [--stop-on-violation] [--show-progress SHOW-PROGRESS] [--] [<path>...]

Script php-cs-fixer fix --ansi --verbose --diff --config=.php-cs-fixer.user-guide.php handling the cs-fix event returned with error code 1

[paulbalandan]

I pushed a different approach. I disabled registering custom fixers for PHP 7.4. Only for PHP 8.0 and above

[kenjis]

Worked on PHP 7.4. Thank you!