diff --git a/samples/client/petstore/php/models/Category.php b/samples/client/petstore/php/models/Category.php
deleted file mode 100644
index 98e7ba24800..00000000000
--- a/samples/client/petstore/php/models/Category.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-/**
- *  Copyright 2015 Reverb Technologies, Inc.
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/**
- * $model.description$
- *
- * NOTE: This class is auto generated by the swagger code generator program. Do not edit the class manually.
- *
- */
-
-class Category implements ArrayAccess {
-  static $swaggerTypes = array(
-      'id' => 'int',
-      'name' => 'string'
-  );
-
-  static $attributeMap = array(
-      'id' => 'id',
-      'name' => 'name'
-  );
-
-  
-  public $id; /* int */
-  public $name; /* string */
-
-  public function __construct(array $data) {
-    $this->id = $data["id"];
-    $this->name = $data["name"];
-  }
-
-  public function offsetExists($offset) {
-    return isset($this->$offset);
-  }
-
-  public function offsetGet($offset) {
-    return $this->$offset;
-  }
-
-  public function offsetSet($offset, $value) {
-    $this->$offset = $value;
-  }
-
-  public function offsetUnset($offset) {
-    unset($this->$offset);
-  }
-}
diff --git a/samples/client/petstore/php/models/Order.php b/samples/client/petstore/php/models/Order.php
deleted file mode 100644
index 2770e8bbbdf..00000000000
--- a/samples/client/petstore/php/models/Order.php
+++ /dev/null
@@ -1,79 +0,0 @@
-<?php
-/**
- *  Copyright 2015 Reverb Technologies, Inc.
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/**
- * $model.description$
- *
- * NOTE: This class is auto generated by the swagger code generator program. Do not edit the class manually.
- *
- */
-
-class Order implements ArrayAccess {
-  static $swaggerTypes = array(
-      'id' => 'int',
-      'pet_id' => 'int',
-      'quantity' => 'int',
-      'ship_date' => 'DateTime',
-      'status' => 'string',
-      'complete' => 'boolean'
-  );
-
-  static $attributeMap = array(
-      'id' => 'id',
-      'pet_id' => 'petId',
-      'quantity' => 'quantity',
-      'ship_date' => 'shipDate',
-      'status' => 'status',
-      'complete' => 'complete'
-  );
-
-  
-  public $id; /* int */
-  public $pet_id; /* int */
-  public $quantity; /* int */
-  public $ship_date; /* DateTime */
-  /**
-  * Order Status
-  */
-  public $status; /* string */
-  public $complete; /* boolean */
-
-  public function __construct(array $data) {
-    $this->id = $data["id"];
-    $this->pet_id = $data["pet_id"];
-    $this->quantity = $data["quantity"];
-    $this->ship_date = $data["ship_date"];
-    $this->status = $data["status"];
-    $this->complete = $data["complete"];
-  }
-
-  public function offsetExists($offset) {
-    return isset($this->$offset);
-  }
-
-  public function offsetGet($offset) {
-    return $this->$offset;
-  }
-
-  public function offsetSet($offset, $value) {
-    $this->$offset = $value;
-  }
-
-  public function offsetUnset($offset) {
-    unset($this->$offset);
-  }
-}
diff --git a/samples/client/petstore/php/models/Pet.php b/samples/client/petstore/php/models/Pet.php
index eee7fa3784c..e980d858a2f 100644
--- a/samples/client/petstore/php/models/Pet.php
+++ b/samples/client/petstore/php/models/Pet.php
@@ -22,7 +22,7 @@
  *
  */
 
-class Pet implements ArrayAccess {
+class pet implements ArrayAccess {
   static $swaggerTypes = array(
       'id' => 'int',
       'category' => 'Category',
diff --git a/samples/client/petstore/php/models/Tag.php b/samples/client/petstore/php/models/Tag.php
deleted file mode 100644
index f8efc998df6..00000000000
--- a/samples/client/petstore/php/models/Tag.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-/**
- *  Copyright 2015 Reverb Technologies, Inc.
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/**
- * $model.description$
- *
- * NOTE: This class is auto generated by the swagger code generator program. Do not edit the class manually.
- *
- */
-
-class Tag implements ArrayAccess {
-  static $swaggerTypes = array(
-      'id' => 'int',
-      'name' => 'string'
-  );
-
-  static $attributeMap = array(
-      'id' => 'id',
-      'name' => 'name'
-  );
-
-  
-  public $id; /* int */
-  public $name; /* string */
-
-  public function __construct(array $data) {
-    $this->id = $data["id"];
-    $this->name = $data["name"];
-  }
-
-  public function offsetExists($offset) {
-    return isset($this->$offset);
-  }
-
-  public function offsetGet($offset) {
-    return $this->$offset;
-  }
-
-  public function offsetSet($offset, $value) {
-    $this->$offset = $value;
-  }
-
-  public function offsetUnset($offset) {
-    unset($this->$offset);
-  }
-}
diff --git a/samples/client/petstore/php/models/pet.php b/samples/client/petstore/php/models/pet.php
deleted file mode 100644
index e980d858a2f..00000000000
--- a/samples/client/petstore/php/models/pet.php
+++ /dev/null
@@ -1,79 +0,0 @@
-<?php
-/**
- *  Copyright 2015 Reverb Technologies, Inc.
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/**
- * $model.description$
- *
- * NOTE: This class is auto generated by the swagger code generator program. Do not edit the class manually.
- *
- */
-
-class pet implements ArrayAccess {
-  static $swaggerTypes = array(
-      'id' => 'int',
-      'category' => 'Category',
-      'name' => 'string',
-      'photo_urls' => 'array[string]',
-      'tags' => 'array[Tag]',
-      'status' => 'string'
-  );
-
-  static $attributeMap = array(
-      'id' => 'id',
-      'category' => 'category',
-      'name' => 'name',
-      'photo_urls' => 'photoUrls',
-      'tags' => 'tags',
-      'status' => 'status'
-  );
-
-  
-  public $id; /* int */
-  public $category; /* Category */
-  public $name; /* string */
-  public $photo_urls; /* array[string] */
-  public $tags; /* array[Tag] */
-  /**
-  * pet status in the store
-  */
-  public $status; /* string */
-
-  public function __construct(array $data) {
-    $this->id = $data["id"];
-    $this->category = $data["category"];
-    $this->name = $data["name"];
-    $this->photo_urls = $data["photo_urls"];
-    $this->tags = $data["tags"];
-    $this->status = $data["status"];
-  }
-
-  public function offsetExists($offset) {
-    return isset($this->$offset);
-  }
-
-  public function offsetGet($offset) {
-    return $this->$offset;
-  }
-
-  public function offsetSet($offset, $value) {
-    $this->$offset = $value;
-  }
-
-  public function offsetUnset($offset) {
-    unset($this->$offset);
-  }
-}
diff --git a/samples/client/petstore/php/models/user.php b/samples/client/petstore/php/models/user.php
deleted file mode 100644
index 1ae88e5e2aa..00000000000
--- a/samples/client/petstore/php/models/user.php
+++ /dev/null
@@ -1,87 +0,0 @@
-<?php
-/**
- *  Copyright 2015 Reverb Technologies, Inc.
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/**
- * $model.description$
- *
- * NOTE: This class is auto generated by the swagger code generator program. Do not edit the class manually.
- *
- */
-
-class user implements ArrayAccess {
-  static $swaggerTypes = array(
-      'id' => 'int',
-      'username' => 'string',
-      'first_name' => 'string',
-      'last_name' => 'string',
-      'email' => 'string',
-      'password' => 'string',
-      'phone' => 'string',
-      'user_status' => 'int'
-  );
-
-  static $attributeMap = array(
-      'id' => 'id',
-      'username' => 'username',
-      'first_name' => 'firstName',
-      'last_name' => 'lastName',
-      'email' => 'email',
-      'password' => 'password',
-      'phone' => 'phone',
-      'user_status' => 'userStatus'
-  );
-
-  
-  public $id; /* int */
-  public $username; /* string */
-  public $first_name; /* string */
-  public $last_name; /* string */
-  public $email; /* string */
-  public $password; /* string */
-  public $phone; /* string */
-  /**
-  * User Status
-  */
-  public $user_status; /* int */
-
-  public function __construct(array $data) {
-    $this->id = $data["id"];
-    $this->username = $data["username"];
-    $this->first_name = $data["first_name"];
-    $this->last_name = $data["last_name"];
-    $this->email = $data["email"];
-    $this->password = $data["password"];
-    $this->phone = $data["phone"];
-    $this->user_status = $data["user_status"];
-  }
-
-  public function offsetExists($offset) {
-    return isset($this->$offset);
-  }
-
-  public function offsetGet($offset) {
-    return $this->$offset;
-  }
-
-  public function offsetSet($offset, $value) {
-    $this->$offset = $value;
-  }
-
-  public function offsetUnset($offset) {
-    unset($this->$offset);
-  }
-}