add codesniffer

.gitignore

@@ -33,3 +33,8 @@ phpstan.neon
 /.php-cs-fixer.php
 /.php-cs-fixer.cache
 ###< friendsofphp/php-cs-fixer ###
+
+###> squizlabs/php_codesniffer ###
+/.phpcs-cache
+/phpcs.xml
+###< squizlabs/php_codesniffer ###

Makefile

@@ -300,7 +300,7 @@ report-code-coverage: ## Updates code coverage on coveralls.io. Note: COVERALLS_
 	@make exec-bash cmd="export COVERALLS_REPO_TOKEN=${COVERALLS_REPO_TOKEN} && php ./vendor/bin/php-coveralls -v --coverage_clover reports/clover.xml --json_path reports/coverals.json"
 
 phpcs: ## Runs PHP CodeSniffer
-	@make exec-bash cmd="./vendor/bin/phpcs --version && ./vendor/bin/phpcs --standard=PSR12 --colors -p src tests"
+	@make exec-bash cmd="./vendor/bin/phpcs --version && ./vendor/bin/phpcs --standard=PSR12 --colors -p src tests/Unit tests/Functional"
 
 ecs: ## Runs Easy Coding Standard tool
 	@make exec-bash cmd="./vendor/bin/ecs --version && ./vendor/bin/ecs --clear-cache check src tests/Unit tests/Functional"

composer.json

@@ -102,6 +102,7 @@
         "phpstan/phpstan-phpunit": "^1.3",
         "phpstan/phpstan-symfony": "^1.3",
         "phpunit/phpunit": "^9.5",
+        "squizlabs/php_codesniffer": "*",
         "symfony/browser-kit": "6.4.*",
         "symfony/css-selector": "6.4.*",
         "symfony/debug-bundle": "6.4.*",

phpcs.xml.dist

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/squizlabs/php_codesniffer/phpcs.xsd">
+
+    <arg name="basepath" value="."/>
+    <arg name="cache" value=".phpcs-cache"/>
+    <arg name="colors"/>
+    <arg name="extensions" value="php"/>
+
+    <rule ref="PSR12"/>
+
+    <file>bin/</file>
+    <file>config/</file>
+    <file>public/</file>
+    <file>src/</file>
+    <file>tests/</file>
+
+</ruleset>

symfony.lock

@@ -64,6 +64,18 @@
             "tests/bootstrap.php"
         ]
     },
+    "squizlabs/php_codesniffer": {
+        "version": "3.9",
+        "recipe": {
+            "repo": "github.com/symfony/recipes-contrib",
+            "branch": "main",
+            "version": "3.6",
+            "ref": "1019e5c08d4821cb9b77f4891f8e9c31ff20ac6f"
+        },
+        "files": [
+            "phpcs.xml.dist"
+        ]
+    },
     "symfony/asset-mapper": {
         "version": "6.4",
         "recipe": {