build: Added GitHub Actions workflow to run phpcs.

.github/workflows/phpcs.yml

@@ -0,0 +1,54 @@
+name: PHP Coding Standard
+
+on:
+  push:
+    branches:
+      - 'master'
+  pull_request:
+    branches:
+      - '*'
+
+permissions:
+  contents: read
+
+jobs:
+  phpcs:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version:
+          - '7.4'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP with extensions
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          ini-values: assert.exception=1, zend.assertions=1, error_reporting=-1, log_errors_max_len=0, display_errors=On
+          tools: composer
+
+      - name: Composer get cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache Composer
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-php${{ matrix.php-version }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: |
+            ${{ runner.os }}-php${{ matrix.php-version }}-composer-
+
+      - name: Install Composer Packages
+        run: composer install --no-ansi --no-interaction --no-progress --ignore-platform-req=php
+
+      - name: Install CodeSniffer Rule
+        run: vendors/bin/phpcs --config-set installed_paths vendors/cakephp/cakephp-codesniffer
+
+      - name: Check CodeSniffer
+        run: vendors/bin/phpcs -p --extensions=php --standard=ruleset.xml ./lib/Cake

lib/Cake/Network/Email/MailTransport.php

@@ -32,7 +32,6 @@ class MailTransport extends AbstractTransport {
  * @throws SocketException When mail cannot be sent.
  */
 	public function send(CakeEmail $email) {
-
 		// https://github.com/cakephp/cakephp/issues/2209
 		// https://bugs.php.net/bug.php?id=47983
 		$eol = "\r\n";

ruleset.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0"?>
+<ruleset name="CakePHP2PHP8">
+	<!-- Include CakePHP 2 Coding standard rules -->
+	<rule ref="CakePHP" />
+
+	<!-- Defined public method with underscore: __tostring(). -->
+	<rule ref="CakePHP.NamingConventions.ValidFunctionName.PublicWithUnderscore">
+		<exclude-pattern>lib/Cake/Network/Http/HttpSocketResponse.php</exclude-pattern>
+	</rule>
+
+	<rule ref="Generic.PHP.DeprecatedFunctions.Deprecated">
+		<!-- Using the deprecated get_magic_quotes_gpc function. -->
+		<exclude-pattern>lib/Cake/View/Helper.php</exclude-pattern>
+		<!-- Using the deprecated mcrypt_* functions. -->
+		<exclude-pattern>lib/Cake/Utility/Security.php</exclude-pattern>
+	</rule>
+
+	<rule ref="CakePHP.Commenting.FunctionComment.Missing">
+		<exclude-pattern>lib/Cake/TestSuite/Fixture/CakeFixtureInjector.php</exclude-pattern>
+	</rule>
+</ruleset>