Opening brace must not be followed by a blank line

Expected 1 space(s) after IF keyword; 0 found

PHP return type declarations must be lowercase; expected "bool" but found "Bool"

Error: Command failed: php phpcs.phar --report=checkstyle --standard=phpcs.xml www/app.php www/src/Singurix/Chat/App.php www/src/Singurix/Chat/Client.php www/src/Singurix/Chat/Config.php www/src/Singurix/Chat/Server.php www/src/Singurix/Chat/SocketChat.php www/src/Singurix/Chat/Stdout.php

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, tinovyatkin/action-php-codesniffer@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/