diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSlim4ServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSlim4ServerCodegen.java
index dc6fefcee776..64a94cecf622 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSlim4ServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSlim4ServerCodegen.java
@@ -245,6 +245,10 @@ public void processOpts() {
         if (Boolean.TRUE.equals(generateModelTests)) {
             supportingFiles.add(new SupportingFile("base_model_test.mustache", toSrcPath(invokerPackage, testBasePath), "BaseModelTest.php"));
         }
+
+        // based on example from link
+        // @see https://github.com/shivammathur/setup-php/blob/master/examples/slim-framework.yml
+        supportingFiles.add(new SupportingFile("github_action.yml.mustache", ".github" + File.separator + "workflows" + File.separator, "main.yml"));
     }
 
     @Override
diff --git a/modules/openapi-generator/src/main/resources/php-slim4-server/github_action.yml.mustache b/modules/openapi-generator/src/main/resources/php-slim4-server/github_action.yml.mustache
new file mode 100644
index 000000000000..5abe0b407f27
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/php-slim4-server/github_action.yml.mustache
@@ -0,0 +1,50 @@
+# GitHub Action for Slim Framework
+{{! based on example from link https://github.com/shivammathur/setup-php/blob/master/examples/slim-framework.yml }}
+{{! Since GitHub actions config contains variables with double braces }}
+{{! may conflict with mustache declarations, switch to different tags then }}
+{{=<% %>=}}
+name: Testing Slim Framework
+on: [push, pull_request]
+jobs:
+  build:
+    strategy:
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        php-versions: ['7.4', '8.0', '8.1']
+    runs-on: ${{ matrix.operating-system }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # Docs: https://github.com/shivammathur/setup-php
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: mbstring, simplexml, dom
+          coverage: xdebug
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          # Use composer.json for key, if composer.lock is not committed.
+          # key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer install --no-progress --prefer-dist --optimize-autoloader
+
+      - name: Check PHP syntax
+        run: vendor/bin/phplint ./ --exclude=vendor
+
+      - name: Test with PHPUnit
+        run: vendor/bin/phpunit --coverage-text
+
+      - name: Check coding style
+        run: vendor/bin/phpcs
diff --git a/samples/server/petstore/php-slim4/.github/workflows/main.yml b/samples/server/petstore/php-slim4/.github/workflows/main.yml
new file mode 100644
index 000000000000..64a55d0e1d6d
--- /dev/null
+++ b/samples/server/petstore/php-slim4/.github/workflows/main.yml
@@ -0,0 +1,46 @@
+# GitHub Action for Slim Framework
+name: Testing Slim Framework
+on: [push, pull_request]
+jobs:
+  build:
+    strategy:
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        php-versions: ['7.4', '8.0', '8.1']
+    runs-on: ${{ matrix.operating-system }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # Docs: https://github.com/shivammathur/setup-php
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: mbstring, simplexml, dom
+          coverage: xdebug
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          # Use composer.json for key, if composer.lock is not committed.
+          # key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer install --no-progress --prefer-dist --optimize-autoloader
+
+      - name: Check PHP syntax
+        run: vendor/bin/phplint ./ --exclude=vendor
+
+      - name: Test with PHPUnit
+        run: vendor/bin/phpunit --coverage-text
+
+      - name: Check coding style
+        run: vendor/bin/phpcs
diff --git a/samples/server/petstore/php-slim4/.openapi-generator/FILES b/samples/server/petstore/php-slim4/.openapi-generator/FILES
index 08a1e9c294cd..3bfc15a93cf2 100644
--- a/samples/server/petstore/php-slim4/.openapi-generator/FILES
+++ b/samples/server/petstore/php-slim4/.openapi-generator/FILES
@@ -1,3 +1,4 @@
+.github/workflows/main.yml
 .gitignore
 README.md
 composer.json