diff --git a/bin/openapi3/slim-petstore-server.sh b/bin/openapi3/slim-petstore-server.sh
new file mode 100755
index 00000000000..b7842f6309c
--- /dev/null
+++ b/bin/openapi3/slim-petstore-server.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="$@ generate -t modules/openapi-generator/src/main/resources/slim -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -l php-slim -o samples/server/petstore/slim"
+
+java $JAVA_OPTS -jar $executable $ags
diff --git a/samples/server/petstore/slim/.openapi-generator/VERSION b/samples/server/petstore/slim/.openapi-generator/VERSION
index 7fea99011a6..096bf47efe3 100644
--- a/samples/server/petstore/slim/.openapi-generator/VERSION
+++ b/samples/server/petstore/slim/.openapi-generator/VERSION
@@ -1 +1 @@
-2.2.3-SNAPSHOT
\ No newline at end of file
+3.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/slim/index.php b/samples/server/petstore/slim/index.php
index 74d6648df9f..bf9bbce9c55 100644
--- a/samples/server/petstore/slim/index.php
+++ b/samples/server/petstore/slim/index.php
@@ -13,7 +13,7 @@ $app = new Slim\App();
  * POST addPet
  * Summary: Add a new pet to the store
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->POST('/v2/pet', function($request, $response, $args) {
             
@@ -29,7 +29,7 @@ $app->POST('/v2/pet', function($request, $response, $args) {
  * DELETE deletePet
  * Summary: Deletes a pet
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->DELETE('/v2/pet/{petId}', function($request, $response, $args) {
             $headers = $request->getHeaders();
@@ -95,7 +95,7 @@ $app->GET('/v2/pet/{petId}', function($request, $response, $args) {
  * PUT updatePet
  * Summary: Update an existing pet
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->PUT('/v2/pet', function($request, $response, $args) {
             
@@ -111,7 +111,7 @@ $app->PUT('/v2/pet', function($request, $response, $args) {
  * POST updatePetWithForm
  * Summary: Updates a pet in the store with form data
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->POST('/v2/pet/{petId}', function($request, $response, $args) {
             
@@ -143,7 +143,7 @@ $app->POST('/v2/pet/{petId}/uploadImage', function($request, $response, $args) {
  * DELETE deleteOrder
  * Summary: Delete purchase order by ID
  * Notes: For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->DELETE('/v2/store/order/{orderId}', function($request, $response, $args) {
             
@@ -207,7 +207,7 @@ $app->POST('/v2/store/order', function($request, $response, $args) {
  * POST createUser
  * Summary: Create user
  * Notes: This can only be done by the logged in user.
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->POST('/v2/user', function($request, $response, $args) {
             
@@ -223,7 +223,7 @@ $app->POST('/v2/user', function($request, $response, $args) {
  * POST createUsersWithArrayInput
  * Summary: Creates list of users with given input array
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->POST('/v2/user/createWithArray', function($request, $response, $args) {
             
@@ -239,7 +239,7 @@ $app->POST('/v2/user/createWithArray', function($request, $response, $args) {
  * POST createUsersWithListInput
  * Summary: Creates list of users with given input array
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->POST('/v2/user/createWithList', function($request, $response, $args) {
             
@@ -255,7 +255,7 @@ $app->POST('/v2/user/createWithList', function($request, $response, $args) {
  * DELETE deleteUser
  * Summary: Delete user
  * Notes: This can only be done by the logged in user.
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->DELETE('/v2/user/{username}', function($request, $response, $args) {
             
@@ -304,7 +304,7 @@ $app->GET('/v2/user/login', function($request, $response, $args) {
  * GET logoutUser
  * Summary: Logs out current logged in user session
  * Notes: 
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->GET('/v2/user/logout', function($request, $response, $args) {
             
@@ -320,7 +320,7 @@ $app->GET('/v2/user/logout', function($request, $response, $args) {
  * PUT updateUser
  * Summary: Updated user
  * Notes: This can only be done by the logged in user.
- * Output-Formats: [application/xml, application/json]
+
  */
 $app->PUT('/v2/user/{username}', function($request, $response, $args) {