diff --git a/.github/workflows/phpcs.yml b/.github/workflows/phpcs.yml
new file mode 100644
index 0000000..2520ce7
--- /dev/null
+++ b/.github/workflows/phpcs.yml
@@ -0,0 +1,34 @@
+name: "PHPCS"
+
+on:
+  push:
+    branches:
+      - master
+      - workflow
+    paths:
+      - "**.php"
+      - "ruleset.xml"
+      - ".github/workflows/phpcs.yml"
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  phpcs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Log php version
+        run: php --version
+
+      - name: Composer install
+        run: php composer.phar install
+
+      - name: Run php code sniffer
+        run: vendor/bin/phpcs -v --standard=ruleset.xml custom-standards
+
+      - name: Run php code sniffer on tests
+        run: vendor/bin/phpcs -v --standard=PSR12 tests
diff --git a/.github/workflows/sniff-test.yml b/.github/workflows/sniff-test.yml
new file mode 100644
index 0000000..8e72049
--- /dev/null
+++ b/.github/workflows/sniff-test.yml
@@ -0,0 +1,31 @@
+name: "SNIFF-TEST"
+
+on:
+  push:
+    branches:
+      - master
+      - workflow
+    paths:
+      - "**.php"
+      - "ruleset.xml"
+      - ".github/workflows/sniff-test.yml"
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  sniff-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Log php version
+        run: php --version
+
+      - name: Composer install
+        run: php composer.phar install
+
+      - name: Run php code sniffer tests
+        run: php tests/runner.php
diff --git a/composer.phar b/composer.phar
index b88fb5f..f6df0ce 100644
Binary files a/composer.phar and b/composer.phar differ
diff --git a/custom-standards/Flyeralarm/Sniffs/Classes/FullyQualifiedSniff.php b/custom-standards/Flyeralarm/Sniffs/Classes/FullyQualifiedSniff.php
index 2e8a703..8a47512 100644
--- a/custom-standards/Flyeralarm/Sniffs/Classes/FullyQualifiedSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/Classes/FullyQualifiedSniff.php
@@ -13,13 +13,12 @@ class FullyQualifiedSniff implements Sniff
      */
     public function register()
     {
-        return array(T_DOUBLE_COLON, T_NEW);
+        return [T_DOUBLE_COLON, T_NEW];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {
diff --git a/custom-standards/Flyeralarm/Sniffs/ControlStructures/YodaSniff.php b/custom-standards/Flyeralarm/Sniffs/ControlStructures/YodaSniff.php
index 3f0cf28..6bf3228 100644
--- a/custom-standards/Flyeralarm/Sniffs/ControlStructures/YodaSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/ControlStructures/YodaSniff.php
@@ -12,13 +12,12 @@ class YodaSniff implements Sniff
      */
     public function register()
     {
-        return array(T_IF, T_ELSEIF, T_WHILE);
+        return [T_IF, T_ELSEIF, T_WHILE];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {
@@ -87,21 +86,25 @@ private function checkConditionalOrderForArithmeticExpression(
 
         // e.g. if ($foo = true)
         // e.g. if ($foo = 'bar')
-        if (in_array($leftOperandTokenId, $functionAndVariableTokenIds)
+        if (
+            in_array($leftOperandTokenId, $functionAndVariableTokenIds)
             && in_array($rightOperandTokenId, $languageTypeTokenIds)
         ) {
             return;
         }
         // e.g. if (count(..) > $test)
         // e.g. if ($foo == $bar)
-        if (in_array($leftOperandTokenId, $functionAndVariableTokenIds)
+        if (
+            in_array($leftOperandTokenId, $functionAndVariableTokenIds)
             && in_array($rightOperandTokenId, $functionAndVariableTokenIds)
         ) {
             return;
         }
         // e.g. if ('foo' == 'bar')
-        if (in_array($leftOperandTokenId, $languageTypeTokenIds)
-            && in_array($rightOperandTokenId, $languageTypeTokenIds)) {
+        if (
+            in_array($leftOperandTokenId, $languageTypeTokenIds)
+            && in_array($rightOperandTokenId, $languageTypeTokenIds)
+        ) {
             return;
         }
 
diff --git a/custom-standards/Flyeralarm/Sniffs/Docblock/ExpectedExceptionMessageSniff.php b/custom-standards/Flyeralarm/Sniffs/Docblock/ExpectedExceptionMessageSniff.php
index 1c5ca32..042700a 100644
--- a/custom-standards/Flyeralarm/Sniffs/Docblock/ExpectedExceptionMessageSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/Docblock/ExpectedExceptionMessageSniff.php
@@ -12,21 +12,22 @@ class ExpectedExceptionMessageSniff implements Sniff
      */
     public function register()
     {
-        return array(T_DOC_COMMENT_OPEN_TAG);
+        return [T_DOC_COMMENT_OPEN_TAG];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {
         if (!$this->hasAnnotationInDoc($phpcsFile, $stackPtr, '@expectedException')) {
             return;
         }
-        if ($this->hasAnnotationInDoc($phpcsFile, $stackPtr, '@expectedExceptionMessage')
-            || $this->hasAnnotationInDoc($phpcsFile, $stackPtr, '@expectedExceptionMessageRegExp')) {
+        if (
+            $this->hasAnnotationInDoc($phpcsFile, $stackPtr, '@expectedExceptionMessage')
+            || $this->hasAnnotationInDoc($phpcsFile, $stackPtr, '@expectedExceptionMessageRegExp')
+        ) {
             return;
         }
 
diff --git a/custom-standards/Flyeralarm/Sniffs/Docblock/ReturnTypeSniff.php b/custom-standards/Flyeralarm/Sniffs/Docblock/ReturnTypeSniff.php
index 6271637..5d58198 100644
--- a/custom-standards/Flyeralarm/Sniffs/Docblock/ReturnTypeSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/Docblock/ReturnTypeSniff.php
@@ -41,13 +41,12 @@ class ReturnTypeSniff implements Sniff
      */
     public function register()
     {
-        return array(T_DOC_COMMENT_OPEN_TAG);
+        return [T_DOC_COMMENT_OPEN_TAG];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {
diff --git a/custom-standards/Flyeralarm/Sniffs/File/ExceptionMessageSniff.php b/custom-standards/Flyeralarm/Sniffs/File/ExceptionMessageSniff.php
index a8193d7..5df674d 100644
--- a/custom-standards/Flyeralarm/Sniffs/File/ExceptionMessageSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/File/ExceptionMessageSniff.php
@@ -12,13 +12,12 @@ class ExceptionMessageSniff implements Sniff
      */
     public function register()
     {
-        return array(T_CLASS);
+        return [T_CLASS];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return int|void
      * @throws \PHP_CodeSniffer\Exceptions\RuntimeException
      */
     public function process(File $phpcsFile, $stackPtr)
@@ -31,7 +30,7 @@ public function process(File $phpcsFile, $stackPtr)
 
         $tokens = $phpcsFile->getTokens();
         $ptr = -1;
-        while($ptr = $phpcsFile->findNext(T_CONSTANT_ENCAPSED_STRING, $ptr + 1)) {
+        while ($ptr = $phpcsFile->findNext(T_CONSTANT_ENCAPSED_STRING, $ptr + 1)) {
             if (strpos($tokens[$ptr]['content'], '!') !== false) {
                 $phpcsFile->addError(
                     'Exclamationmarks are not allowed in Exceptionmessages',
diff --git a/custom-standards/Flyeralarm/Sniffs/File/ForbiddenKeywordsSniff.php b/custom-standards/Flyeralarm/Sniffs/File/ForbiddenKeywordsSniff.php
index efbf0c5..c0b189d 100644
--- a/custom-standards/Flyeralarm/Sniffs/File/ForbiddenKeywordsSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/File/ForbiddenKeywordsSniff.php
@@ -12,13 +12,12 @@ class ForbiddenKeywordsSniff implements Sniff
      */
     public function register()
     {
-        return array(T_CLASS, T_ABSTRACT, T_TRAIT);
+        return [T_CLASS, T_ABSTRACT, T_TRAIT];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {
diff --git a/custom-standards/Flyeralarm/Sniffs/File/NamespacesSniff.php b/custom-standards/Flyeralarm/Sniffs/File/NamespacesSniff.php
index 01cd9a1..49803b5 100644
--- a/custom-standards/Flyeralarm/Sniffs/File/NamespacesSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/File/NamespacesSniff.php
@@ -12,19 +12,18 @@ class NamespacesSniff implements Sniff
      */
     public function register()
     {
-        return array(T_CLASS, T_ABSTRACT, T_TRAIT, T_INTERFACE);
+        return [T_CLASS, T_ABSTRACT, T_TRAIT, T_INTERFACE];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {
         $tokens = $phpcsFile->getTokens();
         $ptr = -1;
-        while($ptr = $phpcsFile->findNext(T_NS_SEPARATOR, $ptr + 1)) {
+        while ($ptr = $phpcsFile->findNext(T_NS_SEPARATOR, $ptr + 1)) {
             if (strpos($tokens[$ptr + 1]['content'], '_') !== false) {
                 $phpcsFile->addError(
                     'Using underscore within namespaces is discouraged',
diff --git a/custom-standards/Flyeralarm/Sniffs/File/NoClassKindSuffixSniff.php b/custom-standards/Flyeralarm/Sniffs/File/NoClassKindSuffixSniff.php
index 0e98b85..9a27c6e 100644
--- a/custom-standards/Flyeralarm/Sniffs/File/NoClassKindSuffixSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/File/NoClassKindSuffixSniff.php
@@ -12,13 +12,12 @@ class NoClassKindSuffixSniff implements Sniff
      */
     public function register()
     {
-        return array(T_INTERFACE, T_CLASS, T_TRAIT);
+        return [T_INTERFACE, T_CLASS, T_TRAIT];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return int|void
      * @throws \PHP_CodeSniffer\Exceptions\RuntimeException
      */
     public function process(File $phpcsFile, $stackPtr)
diff --git a/custom-standards/Flyeralarm/Sniffs/Variable/LowerCamelCaseSniff.php b/custom-standards/Flyeralarm/Sniffs/Variable/LowerCamelCaseSniff.php
index 46d016b..7e63c04 100644
--- a/custom-standards/Flyeralarm/Sniffs/Variable/LowerCamelCaseSniff.php
+++ b/custom-standards/Flyeralarm/Sniffs/Variable/LowerCamelCaseSniff.php
@@ -28,13 +28,12 @@ class LowerCamelCaseSniff implements Sniff
      */
     public function register()
     {
-        return array(T_OPEN_TAG);
+        return [T_OPEN_TAG];
     }
 
     /**
      * @param File $phpcsFile
      * @param int $stackPtr
-     * @return void
      */
     public function process(File $phpcsFile, $stackPtr)
     {