diff --git a/examples/php/composer.json b/examples/php/composer.json
index 3d1a95d..f0b9977 100644
--- a/examples/php/composer.json
+++ b/examples/php/composer.json
@@ -2,7 +2,11 @@
   "name": "grpc/grpc-demo",
   "description": "gRPC example for PHP",
   "require": {
-    "ext-grpc": "*",
-    "grpc/grpc": "v1.0.0"
+    "grpc/grpc": "v1.1.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "": "route_guide/"
+    }
   }
 }
diff --git a/examples/php/greeter_client.php b/examples/php/greeter_client.php
index a5c0865..986a4bb 100644
--- a/examples/php/greeter_client.php
+++ b/examples/php/greeter_client.php
@@ -33,14 +33,18 @@
  */
 
 require dirname(__FILE__).'/vendor/autoload.php';
-require dirname(__FILE__).'/helloworld.php';
+
+// The following includes are needed when using protobuf 3.1.0
+// and will suppress warnings when using protobuf 3.2.0+
+@include_once dirname(__FILE__).'/helloworld.pb.php';
+@include_once dirname(__FILE__).'/helloworld_grpc_pb.php';
 
 function greet($name)
 {
-    $client = new helloworld\GreeterClient('localhost:50051', [
+    $client = new Helloworld\GreeterClient('localhost:50051', [
         'credentials' => Grpc\ChannelCredentials::createInsecure(),
     ]);
-    $request = new helloworld\HelloRequest();
+    $request = new Helloworld\HelloRequest();
     $request->setName($name);
     list($reply, $status) = $client->SayHello($request)->wait();
     $message = $reply->getMessage();
diff --git a/examples/php/helloworld.pb.php b/examples/php/helloworld.pb.php
new file mode 100644
index 0000000..757a4a5
--- /dev/null
+++ b/examples/php/helloworld.pb.php
@@ -0,0 +1,58 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: helloworld.proto
+
+namespace Helloworld;
+
+use Google\Protobuf\Internal\DescriptorPool;
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+class HelloRequest extends \Google\Protobuf\Internal\Message
+{
+    private $name = '';
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function setName($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->name = $var;
+    }
+
+}
+
+class HelloReply extends \Google\Protobuf\Internal\Message
+{
+    private $message = '';
+
+    public function getMessage()
+    {
+        return $this->message;
+    }
+
+    public function setMessage($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->message = $var;
+    }
+
+}
+
+$pool = DescriptorPool::getGeneratedPool();
+
+$pool->internalAddGeneratedFile(hex2bin(
+    "0ae6010a1068656c6c6f776f726c642e70726f746f120a68656c6c6f776f" .
+    "726c64221c0a0c48656c6c6f52657175657374120c0a046e616d65180120" .
+    "012809221d0a0a48656c6c6f5265706c79120f0a076d6573736167651801" .
+    "2001280932490a0747726565746572123e0a0853617948656c6c6f12182e" .
+    "68656c6c6f776f726c642e48656c6c6f526571756573741a162e68656c6c" .
+    "6f776f726c642e48656c6c6f5265706c79220042360a1b696f2e67727063" .
+    "2e6578616d706c65732e68656c6c6f776f726c64420f48656c6c6f576f72" .
+    "6c6450726f746f5001a20203484c57620670726f746f33"
+));
+
diff --git a/examples/php/helloworld.php b/examples/php/helloworld.php
deleted file mode 100644
index 697f52a..0000000
--- a/examples/php/helloworld.php
+++ /dev/null
@@ -1,168 +0,0 @@
-<?php
-// DO NOT EDIT! Generated by Protobuf-PHP protoc plugin 1.0
-// Source: helloworld.proto
-//   Date: 2015-09-24 20:40:14
-
-namespace helloworld {
-
-  class HelloRequest extends \DrSlump\Protobuf\Message
-  {
-      /**  @var string */
-    public $name = null;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'helloworld.HelloRequest');
-
-      // OPTIONAL STRING name = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'name';
-          $f->type = \DrSlump\Protobuf::TYPE_STRING;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <name> has a value.
-     *
-     * @return bool
-     */
-    public function hasName()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <name> value.
-     *
-     * @return \helloworld\HelloRequest
-     */
-    public function clearName()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <name> value.
-     *
-     * @return string
-     */
-    public function getName()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <name> value.
-     *
-     * @param string $value
-     *
-     * @return \helloworld\HelloRequest
-     */
-    public function setName($value)
-    {
-        return $this->_set(1, $value);
-    }
-  }
-}
-
-namespace helloworld {
-
-  class HelloReply extends \DrSlump\Protobuf\Message
-  {
-      /**  @var string */
-    public $message = null;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'helloworld.HelloReply');
-
-      // OPTIONAL STRING message = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'message';
-          $f->type = \DrSlump\Protobuf::TYPE_STRING;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <message> has a value.
-     *
-     * @return bool
-     */
-    public function hasMessage()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <message> value.
-     *
-     * @return \helloworld\HelloReply
-     */
-    public function clearMessage()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <message> value.
-     *
-     * @return string
-     */
-    public function getMessage()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <message> value.
-     *
-     * @param string $value
-     *
-     * @return \helloworld\HelloReply
-     */
-    public function setMessage($value)
-    {
-        return $this->_set(1, $value);
-    }
-  }
-}
-
-namespace helloworld {
-
-  class GreeterClient extends \Grpc\BaseStub
-  {
-      public function __construct($hostname, $opts)
-      {
-          parent::__construct($hostname, $opts);
-      }
-    /**
-     * @param helloworld\HelloRequest $input
-     */
-    public function SayHello(\helloworld\HelloRequest $argument, $metadata = array(), $options = array())
-    {
-        return $this->_simpleRequest('/helloworld.Greeter/SayHello', $argument, '\helloworld\HelloReply::deserialize', $metadata, $options);
-    }
-  }
-}
diff --git a/examples/php/helloworld.proto b/examples/php/helloworld_grpc_pb.php
similarity index 62%
rename from examples/php/helloworld.proto
rename to examples/php/helloworld_grpc_pb.php
index ad8f7a1..cae48bc 100644
--- a/examples/php/helloworld.proto
+++ b/examples/php/helloworld_grpc_pb.php
@@ -1,3 +1,7 @@
+<?php
+// GENERATED CODE -- DO NOT EDIT!
+
+// Original file comments:
 // Copyright 2015, Google Inc.
 // All rights reserved.
 //
@@ -26,25 +30,35 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+namespace Helloworld {
 
-syntax = "proto2";
+  // The greeting service definition.
+  class GreeterClient extends \Grpc\BaseStub {
 
-option java_package = "ex.grpc";
+    /**
+     * @param string $hostname hostname
+     * @param array $opts channel options
+     * @param Grpc\Channel $channel (optional) re-use channel object
+     */
+    public function __construct($hostname, $opts, $channel = null) {
+      parent::__construct($hostname, $opts, $channel);
+    }
 
-package helloworld;
+    /**
+     * Sends a greeting
+     * @param \Helloworld\HelloRequest $argument input argument
+     * @param array $metadata metadata
+     * @param array $options call options
+     */
+    public function SayHello(\Helloworld\HelloRequest $argument,
+      $metadata = [], $options = []) {
+      return $this->_simpleRequest('/helloworld.Greeter/SayHello',
+      $argument,
+      ['\Helloworld\HelloReply', 'decode'],
+      $metadata, $options);
+    }
 
-// The greeting service definition.
-service Greeter {
-  // Sends a greeting
-  rpc SayHello (HelloRequest) returns (HelloReply) {}
-}
+  }
 
-// The request message containing the user's name.
-message HelloRequest {
-  optional string name = 1;
-}
-
-// The response message containing the greetings
-message HelloReply {
-  optional string message = 1;
 }
diff --git a/examples/php/route_guide/route_guide.pb.php b/examples/php/route_guide/route_guide.pb.php
new file mode 100644
index 0000000..78f3ea6
--- /dev/null
+++ b/examples/php/route_guide/route_guide.pb.php
@@ -0,0 +1,209 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: route_guide.proto
+
+namespace Routeguide;
+
+use Google\Protobuf\Internal\DescriptorPool;
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+class Point extends \Google\Protobuf\Internal\Message
+{
+    private $latitude = 0;
+    private $longitude = 0;
+
+    public function getLatitude()
+    {
+        return $this->latitude;
+    }
+
+    public function setLatitude($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->latitude = $var;
+    }
+
+    public function getLongitude()
+    {
+        return $this->longitude;
+    }
+
+    public function setLongitude($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->longitude = $var;
+    }
+
+}
+
+class Rectangle extends \Google\Protobuf\Internal\Message
+{
+    private $lo = null;
+    private $hi = null;
+
+    public function getLo()
+    {
+        return $this->lo;
+    }
+
+    public function setLo(&$var)
+    {
+        GPBUtil::checkMessage($var, \Routeguide\Point::class);
+        $this->lo = $var;
+    }
+
+    public function getHi()
+    {
+        return $this->hi;
+    }
+
+    public function setHi(&$var)
+    {
+        GPBUtil::checkMessage($var, \Routeguide\Point::class);
+        $this->hi = $var;
+    }
+
+}
+
+class Feature extends \Google\Protobuf\Internal\Message
+{
+    private $name = '';
+    private $location = null;
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function setName($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->name = $var;
+    }
+
+    public function getLocation()
+    {
+        return $this->location;
+    }
+
+    public function setLocation(&$var)
+    {
+        GPBUtil::checkMessage($var, \Routeguide\Point::class);
+        $this->location = $var;
+    }
+
+}
+
+class RouteNote extends \Google\Protobuf\Internal\Message
+{
+    private $location = null;
+    private $message = '';
+
+    public function getLocation()
+    {
+        return $this->location;
+    }
+
+    public function setLocation(&$var)
+    {
+        GPBUtil::checkMessage($var, \Routeguide\Point::class);
+        $this->location = $var;
+    }
+
+    public function getMessage()
+    {
+        return $this->message;
+    }
+
+    public function setMessage($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->message = $var;
+    }
+
+}
+
+class RouteSummary extends \Google\Protobuf\Internal\Message
+{
+    private $point_count = 0;
+    private $feature_count = 0;
+    private $distance = 0;
+    private $elapsed_time = 0;
+
+    public function getPointCount()
+    {
+        return $this->point_count;
+    }
+
+    public function setPointCount($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->point_count = $var;
+    }
+
+    public function getFeatureCount()
+    {
+        return $this->feature_count;
+    }
+
+    public function setFeatureCount($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->feature_count = $var;
+    }
+
+    public function getDistance()
+    {
+        return $this->distance;
+    }
+
+    public function setDistance($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->distance = $var;
+    }
+
+    public function getElapsedTime()
+    {
+        return $this->elapsed_time;
+    }
+
+    public function setElapsedTime($var)
+    {
+        GPBUtil::checkInt32($var);
+        $this->elapsed_time = $var;
+    }
+
+}
+
+$pool = DescriptorPool::getGeneratedPool();
+
+$pool->internalAddGeneratedFile(hex2bin(
+    "0ac5050a11726f7574655f67756964652e70726f746f120a726f75746567" .
+    "75696465222c0a05506f696e7412100a086c617469747564651801200128" .
+    "0512110a096c6f6e67697475646518022001280522490a0952656374616e" .
+    "676c65121d0a026c6f18012001280b32112e726f75746567756964652e50" .
+    "6f696e74121d0a02686918022001280b32112e726f75746567756964652e" .
+    "506f696e74223c0a0746656174757265120c0a046e616d65180120012809" .
+    "12230a086c6f636174696f6e18022001280b32112e726f75746567756964" .
+    "652e506f696e7422410a09526f7574654e6f746512230a086c6f63617469" .
+    "6f6e18012001280b32112e726f75746567756964652e506f696e74120f0a" .
+    "076d65737361676518022001280922620a0c526f75746553756d6d617279" .
+    "12130a0b706f696e745f636f756e7418012001280512150a0d6665617475" .
+    "72655f636f756e7418022001280512100a0864697374616e636518032001" .
+    "280512140a0c656c61707365645f74696d651804200128053285020a0a52" .
+    "6f757465477569646512360a0a4765744665617475726512112e726f7574" .
+    "6567756964652e506f696e741a132e726f75746567756964652e46656174" .
+    "7572652200123e0a0c4c697374466561747572657312152e726f75746567" .
+    "756964652e52656374616e676c651a132e726f75746567756964652e4665" .
+    "617475726522003001123e0a0b5265636f7264526f75746512112e726f75" .
+    "746567756964652e506f696e741a182e726f75746567756964652e526f75" .
+    "746553756d6d61727922002801123f0a09526f7574654368617412152e72" .
+    "6f75746567756964652e526f7574654e6f74651a152e726f757465677569" .
+    "64652e526f7574654e6f746522002801300142360a1b696f2e677270632e" .
+    "6578616d706c65732e726f7574656775696465420f526f75746547756964" .
+    "6550726f746f5001a20203525447620670726f746f33"
+));
+
diff --git a/examples/php/route_guide/route_guide.php b/examples/php/route_guide/route_guide.php
deleted file mode 100644
index 65045d0..0000000
--- a/examples/php/route_guide/route_guide.php
+++ /dev/null
@@ -1,789 +0,0 @@
-<?php
-// DO NOT EDIT! Generated by Protobuf-PHP protoc plugin 1.0
-// Source: route_guide.proto
-//   Date: 2015-09-24 21:21:51
-
-namespace routeguide {
-
-  class Point extends \DrSlump\Protobuf\Message
-  {
-      /**  @var int */
-    public $latitude = 0;
-
-    /**  @var int */
-    public $longitude = 0;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'routeguide.Point');
-
-      // OPTIONAL INT32 latitude = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'latitude';
-          $f->type = \DrSlump\Protobuf::TYPE_INT32;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->default = 0;
-          $descriptor->addField($f);
-
-      // OPTIONAL INT32 longitude = 2
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 2;
-          $f->name = 'longitude';
-          $f->type = \DrSlump\Protobuf::TYPE_INT32;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->default = 0;
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <latitude> has a value.
-     *
-     * @return bool
-     */
-    public function hasLatitude()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <latitude> value.
-     *
-     * @return \routeguide\Point
-     */
-    public function clearLatitude()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <latitude> value.
-     *
-     * @return int
-     */
-    public function getLatitude()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <latitude> value.
-     *
-     * @param int $value
-     *
-     * @return \routeguide\Point
-     */
-    public function setLatitude($value)
-    {
-        return $this->_set(1, $value);
-    }
-
-    /**
-     * Check if <longitude> has a value.
-     *
-     * @return bool
-     */
-    public function hasLongitude()
-    {
-        return $this->_has(2);
-    }
-
-    /**
-     * Clear <longitude> value.
-     *
-     * @return \routeguide\Point
-     */
-    public function clearLongitude()
-    {
-        return $this->_clear(2);
-    }
-
-    /**
-     * Get <longitude> value.
-     *
-     * @return int
-     */
-    public function getLongitude()
-    {
-        return $this->_get(2);
-    }
-
-    /**
-     * Set <longitude> value.
-     *
-     * @param int $value
-     *
-     * @return \routeguide\Point
-     */
-    public function setLongitude($value)
-    {
-        return $this->_set(2, $value);
-    }
-  }
-}
-
-namespace routeguide {
-
-  class Rectangle extends \DrSlump\Protobuf\Message
-  {
-      /**  @var \routeguide\Point */
-    public $lo = null;
-
-    /**  @var \routeguide\Point */
-    public $hi = null;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'routeguide.Rectangle');
-
-      // OPTIONAL MESSAGE lo = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'lo';
-          $f->type = \DrSlump\Protobuf::TYPE_MESSAGE;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->reference = '\routeguide\Point';
-          $descriptor->addField($f);
-
-      // OPTIONAL MESSAGE hi = 2
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 2;
-          $f->name = 'hi';
-          $f->type = \DrSlump\Protobuf::TYPE_MESSAGE;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->reference = '\routeguide\Point';
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <lo> has a value.
-     *
-     * @return bool
-     */
-    public function hasLo()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <lo> value.
-     *
-     * @return \routeguide\Rectangle
-     */
-    public function clearLo()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <lo> value.
-     *
-     * @return \routeguide\Point
-     */
-    public function getLo()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <lo> value.
-     *
-     * @param \routeguide\Point $value
-     *
-     * @return \routeguide\Rectangle
-     */
-    public function setLo(\routeguide\Point $value)
-    {
-        return $this->_set(1, $value);
-    }
-
-    /**
-     * Check if <hi> has a value.
-     *
-     * @return bool
-     */
-    public function hasHi()
-    {
-        return $this->_has(2);
-    }
-
-    /**
-     * Clear <hi> value.
-     *
-     * @return \routeguide\Rectangle
-     */
-    public function clearHi()
-    {
-        return $this->_clear(2);
-    }
-
-    /**
-     * Get <hi> value.
-     *
-     * @return \routeguide\Point
-     */
-    public function getHi()
-    {
-        return $this->_get(2);
-    }
-
-    /**
-     * Set <hi> value.
-     *
-     * @param \routeguide\Point $value
-     *
-     * @return \routeguide\Rectangle
-     */
-    public function setHi(\routeguide\Point $value)
-    {
-        return $this->_set(2, $value);
-    }
-  }
-}
-
-namespace routeguide {
-
-  class Feature extends \DrSlump\Protobuf\Message
-  {
-      /**  @var string */
-    public $name = null;
-
-    /**  @var \routeguide\Point */
-    public $location = null;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'routeguide.Feature');
-
-      // OPTIONAL STRING name = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'name';
-          $f->type = \DrSlump\Protobuf::TYPE_STRING;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $descriptor->addField($f);
-
-      // OPTIONAL MESSAGE location = 2
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 2;
-          $f->name = 'location';
-          $f->type = \DrSlump\Protobuf::TYPE_MESSAGE;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->reference = '\routeguide\Point';
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <name> has a value.
-     *
-     * @return bool
-     */
-    public function hasName()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <name> value.
-     *
-     * @return \routeguide\Feature
-     */
-    public function clearName()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <name> value.
-     *
-     * @return string
-     */
-    public function getName()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <name> value.
-     *
-     * @param string $value
-     *
-     * @return \routeguide\Feature
-     */
-    public function setName($value)
-    {
-        return $this->_set(1, $value);
-    }
-
-    /**
-     * Check if <location> has a value.
-     *
-     * @return bool
-     */
-    public function hasLocation()
-    {
-        return $this->_has(2);
-    }
-
-    /**
-     * Clear <location> value.
-     *
-     * @return \routeguide\Feature
-     */
-    public function clearLocation()
-    {
-        return $this->_clear(2);
-    }
-
-    /**
-     * Get <location> value.
-     *
-     * @return \routeguide\Point
-     */
-    public function getLocation()
-    {
-        return $this->_get(2);
-    }
-
-    /**
-     * Set <location> value.
-     *
-     * @param \routeguide\Point $value
-     *
-     * @return \routeguide\Feature
-     */
-    public function setLocation(\routeguide\Point $value)
-    {
-        return $this->_set(2, $value);
-    }
-  }
-}
-
-namespace routeguide {
-
-  class RouteNote extends \DrSlump\Protobuf\Message
-  {
-      /**  @var \routeguide\Point */
-    public $location = null;
-
-    /**  @var string */
-    public $message = null;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'routeguide.RouteNote');
-
-      // OPTIONAL MESSAGE location = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'location';
-          $f->type = \DrSlump\Protobuf::TYPE_MESSAGE;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->reference = '\routeguide\Point';
-          $descriptor->addField($f);
-
-      // OPTIONAL STRING message = 2
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 2;
-          $f->name = 'message';
-          $f->type = \DrSlump\Protobuf::TYPE_STRING;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <location> has a value.
-     *
-     * @return bool
-     */
-    public function hasLocation()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <location> value.
-     *
-     * @return \routeguide\RouteNote
-     */
-    public function clearLocation()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <location> value.
-     *
-     * @return \routeguide\Point
-     */
-    public function getLocation()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <location> value.
-     *
-     * @param \routeguide\Point $value
-     *
-     * @return \routeguide\RouteNote
-     */
-    public function setLocation(\routeguide\Point $value)
-    {
-        return $this->_set(1, $value);
-    }
-
-    /**
-     * Check if <message> has a value.
-     *
-     * @return bool
-     */
-    public function hasMessage()
-    {
-        return $this->_has(2);
-    }
-
-    /**
-     * Clear <message> value.
-     *
-     * @return \routeguide\RouteNote
-     */
-    public function clearMessage()
-    {
-        return $this->_clear(2);
-    }
-
-    /**
-     * Get <message> value.
-     *
-     * @return string
-     */
-    public function getMessage()
-    {
-        return $this->_get(2);
-    }
-
-    /**
-     * Set <message> value.
-     *
-     * @param string $value
-     *
-     * @return \routeguide\RouteNote
-     */
-    public function setMessage($value)
-    {
-        return $this->_set(2, $value);
-    }
-  }
-}
-
-namespace routeguide {
-
-  class RouteSummary extends \DrSlump\Protobuf\Message
-  {
-      /**  @var int */
-    public $point_count = 0;
-
-    /**  @var int */
-    public $feature_count = 0;
-
-    /**  @var int */
-    public $distance = 0;
-
-    /**  @var int */
-    public $elapsed_time = 0;
-
-    /** @var \Closure[] */
-    protected static $__extensions = array();
-
-      public static function descriptor()
-      {
-          $descriptor = new \DrSlump\Protobuf\Descriptor(__CLASS__, 'routeguide.RouteSummary');
-
-      // OPTIONAL INT32 point_count = 1
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 1;
-          $f->name = 'point_count';
-          $f->type = \DrSlump\Protobuf::TYPE_INT32;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->default = 0;
-          $descriptor->addField($f);
-
-      // OPTIONAL INT32 feature_count = 2
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 2;
-          $f->name = 'feature_count';
-          $f->type = \DrSlump\Protobuf::TYPE_INT32;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->default = 0;
-          $descriptor->addField($f);
-
-      // OPTIONAL INT32 distance = 3
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 3;
-          $f->name = 'distance';
-          $f->type = \DrSlump\Protobuf::TYPE_INT32;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->default = 0;
-          $descriptor->addField($f);
-
-      // OPTIONAL INT32 elapsed_time = 4
-      $f = new \DrSlump\Protobuf\Field();
-          $f->number = 4;
-          $f->name = 'elapsed_time';
-          $f->type = \DrSlump\Protobuf::TYPE_INT32;
-          $f->rule = \DrSlump\Protobuf::RULE_OPTIONAL;
-          $f->default = 0;
-          $descriptor->addField($f);
-
-          foreach (self::$__extensions as $cb) {
-              $descriptor->addField($cb(), true);
-          }
-
-          return $descriptor;
-      }
-
-    /**
-     * Check if <point_count> has a value.
-     *
-     * @return bool
-     */
-    public function hasPointCount()
-    {
-        return $this->_has(1);
-    }
-
-    /**
-     * Clear <point_count> value.
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function clearPointCount()
-    {
-        return $this->_clear(1);
-    }
-
-    /**
-     * Get <point_count> value.
-     *
-     * @return int
-     */
-    public function getPointCount()
-    {
-        return $this->_get(1);
-    }
-
-    /**
-     * Set <point_count> value.
-     *
-     * @param int $value
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function setPointCount($value)
-    {
-        return $this->_set(1, $value);
-    }
-
-    /**
-     * Check if <feature_count> has a value.
-     *
-     * @return bool
-     */
-    public function hasFeatureCount()
-    {
-        return $this->_has(2);
-    }
-
-    /**
-     * Clear <feature_count> value.
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function clearFeatureCount()
-    {
-        return $this->_clear(2);
-    }
-
-    /**
-     * Get <feature_count> value.
-     *
-     * @return int
-     */
-    public function getFeatureCount()
-    {
-        return $this->_get(2);
-    }
-
-    /**
-     * Set <feature_count> value.
-     *
-     * @param int $value
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function setFeatureCount($value)
-    {
-        return $this->_set(2, $value);
-    }
-
-    /**
-     * Check if <distance> has a value.
-     *
-     * @return bool
-     */
-    public function hasDistance()
-    {
-        return $this->_has(3);
-    }
-
-    /**
-     * Clear <distance> value.
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function clearDistance()
-    {
-        return $this->_clear(3);
-    }
-
-    /**
-     * Get <distance> value.
-     *
-     * @return int
-     */
-    public function getDistance()
-    {
-        return $this->_get(3);
-    }
-
-    /**
-     * Set <distance> value.
-     *
-     * @param int $value
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function setDistance($value)
-    {
-        return $this->_set(3, $value);
-    }
-
-    /**
-     * Check if <elapsed_time> has a value.
-     *
-     * @return bool
-     */
-    public function hasElapsedTime()
-    {
-        return $this->_has(4);
-    }
-
-    /**
-     * Clear <elapsed_time> value.
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function clearElapsedTime()
-    {
-        return $this->_clear(4);
-    }
-
-    /**
-     * Get <elapsed_time> value.
-     *
-     * @return int
-     */
-    public function getElapsedTime()
-    {
-        return $this->_get(4);
-    }
-
-    /**
-     * Set <elapsed_time> value.
-     *
-     * @param int $value
-     *
-     * @return \routeguide\RouteSummary
-     */
-    public function setElapsedTime($value)
-    {
-        return $this->_set(4, $value);
-    }
-  }
-}
-
-namespace routeguide {
-
-  class RouteGuideClient extends \Grpc\BaseStub
-  {
-      public function __construct($hostname, $opts)
-      {
-          parent::__construct($hostname, $opts);
-      }
-    /**
-     * @param routeguide\Point $input
-     */
-    public function GetFeature(\routeguide\Point $argument, $metadata = array(), $options = array())
-    {
-        return $this->_simpleRequest('/routeguide.RouteGuide/GetFeature', $argument, '\routeguide\Feature::deserialize', $metadata, $options);
-    }
-    /**
-     * @param routeguide\Rectangle $input
-     */
-    public function ListFeatures($argument, $metadata = array(), $options = array())
-    {
-        return $this->_serverStreamRequest('/routeguide.RouteGuide/ListFeatures', $argument, '\routeguide\Feature::deserialize', $metadata, $options);
-    }
-    /**
-     * @param routeguide\Point $input
-     */
-    public function RecordRoute($metadata = array())
-    {
-        return $this->_clientStreamRequest('/routeguide.RouteGuide/RecordRoute', '\routeguide\RouteSummary::deserialize', $metadata);
-    }
-    /**
-     * @param routeguide\RouteNote $input
-     */
-    public function RouteChat($metadata = array())
-    {
-        return $this->_bidiRequest('/routeguide.RouteGuide/RouteChat', '\routeguide\RouteNote::deserialize', $metadata);
-    }
-  }
-}
diff --git a/examples/php/route_guide/route_guide.proto b/examples/php/route_guide/route_guide.proto
deleted file mode 100644
index d50f8a5..0000000
--- a/examples/php/route_guide/route_guide.proto
+++ /dev/null
@@ -1,120 +0,0 @@
-// Copyright 2015, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-syntax = "proto2";
-
-option java_package = "io.grpc.examples";
-
-package routeguide;
-
-// Interface exported by the server.
-service RouteGuide {
-  // A simple RPC.
-  //
-  // Obtains the feature at a given position.
-  rpc GetFeature(Point) returns (Feature) {}
-
-  // A server-to-client streaming RPC.
-  //
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-
-  // A client-to-server streaming RPC.
-  //
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-
-  // A Bidirectional streaming RPC.
-  //
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-}
-
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  optional int32 latitude = 1 [default = 0];
-  optional int32 longitude = 2 [default = 0];
-}
-
-// A latitude-longitude rectangle, represented as two diagonally opposite
-// points "lo" and "hi".
-message Rectangle {
-  // One corner of the rectangle.
-  optional Point lo = 1;
-
-  // The other corner of the rectangle.
-  optional Point hi = 2;
-}
-
-// A feature names something at a given point.
-//
-// If a feature could not be named, the name is empty.
-message Feature {
-  // The name of the feature.
-  optional string name = 1;
-
-  // The point where the feature is detected.
-  optional Point location = 2;
-}
-
-// A RouteNote is a message sent while at a given point.
-message RouteNote {
-  // The location from which the message is sent.
-  optional Point location = 1;
-
-  // The message to be sent.
-  optional string message = 2;
-}
-
-// A RouteSummary is received in response to a RecordRoute rpc.
-//
-// It contains the number of individual points received, the number of
-// detected features, and the total distance covered as the cumulative sum of
-// the distance between each point.
-message RouteSummary {
-  // The number of points received.
-  optional int32 point_count = 1 [default = 0];
-
-  // The number of known features passed while traversing the route.
-  optional int32 feature_count = 2 [default = 0];
-
-  // The distance covered in metres.
-  optional int32 distance = 3 [default = 0];
-
-  // The duration of the traversal in seconds.
-  optional int32 elapsed_time = 4 [default = 0];
-}
diff --git a/examples/php/route_guide/route_guide_client.php b/examples/php/route_guide/route_guide_client.php
index b3cd606..3f38c26 100644
--- a/examples/php/route_guide/route_guide_client.php
+++ b/examples/php/route_guide/route_guide_client.php
@@ -33,11 +33,15 @@
  */
 
 require dirname(__FILE__).'/../vendor/autoload.php';
-require dirname(__FILE__).'/route_guide.php';
+
+// The following includes are needed when using protobuf 3.1.0
+// and will suppress warnings when using protobuf 3.2.0+
+@include_once dirname(__FILE__).'/route_guide.pb.php';
+@include_once dirname(__FILE__).'/route_guide_grpc_pb.php';
 
 define('COORD_FACTOR', 1e7);
 
-$client = new routeguide\RouteGuideClient('localhost:50051', [
+$client = new Routeguide\RouteGuideClient('localhost:50051', [
     'credentials' => Grpc\ChannelCredentials::createInsecure(),
 ]);
 
@@ -63,7 +67,7 @@
     echo "Running GetFeature...\n";
     global $client;
 
-    $point = new routeguide\Point();
+    $point = new Routeguide\Point();
     $points = array(
         array(409146138, -746188906),
         array(0, 0),
@@ -88,15 +92,15 @@
     echo "Running ListFeatures...\n";
     global $client;
 
-    $lo_point = new routeguide\Point();
-    $hi_point = new routeguide\Point();
+    $lo_point = new Routeguide\Point();
+    $hi_point = new Routeguide\Point();
 
     $lo_point->setLatitude(400000000);
     $lo_point->setLongitude(-750000000);
     $hi_point->setLatitude(420000000);
     $hi_point->setLongitude(-730000000);
 
-    $rectangle = new routeguide\Rectangle();
+    $rectangle = new Routeguide\Rectangle();
     $rectangle->setLo($lo_point);
     $rectangle->setHi($hi_point);
 
@@ -126,7 +130,7 @@
     $num_points_in_db = count($db);
     $num_points = 10;
     for ($i = 0; $i < $num_points; ++$i) {
-        $point = new routeguide\Point();
+        $point = new Routeguide\Point();
         $index = rand(0, $num_points_in_db - 1);
         $lat = $db[$index]['location']['latitude'];
         $long = $db[$index]['location']['longitude'];
@@ -169,11 +173,11 @@
     );
 
     foreach ($notes as $n) {
-        $point = new routeguide\Point();
+        $point = new Routeguide\Point();
         $point->setLatitude($lat = $n[0]);
         $point->setLongitude($long = $n[1]);
 
-        $route_note = new routeguide\RouteNote();
+        $route_note = new Routeguide\RouteNote();
         $route_note->setLocation($point);
         $route_note->setMessage($message = $n[2]);
 
diff --git a/examples/php/route_guide/route_guide_grpc_pb.php b/examples/php/route_guide/route_guide_grpc_pb.php
new file mode 100644
index 0000000..fdc55e6
--- /dev/null
+++ b/examples/php/route_guide/route_guide_grpc_pb.php
@@ -0,0 +1,116 @@
+<?php
+// GENERATED CODE -- DO NOT EDIT!
+
+// Original file comments:
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+namespace Routeguide {
+
+  // Interface exported by the server.
+  class RouteGuideClient extends \Grpc\BaseStub {
+
+    /**
+     * @param string $hostname hostname
+     * @param array $opts channel options
+     * @param Grpc\Channel $channel (optional) re-use channel object
+     */
+    public function __construct($hostname, $opts, $channel = null) {
+      parent::__construct($hostname, $opts, $channel);
+    }
+
+    /**
+     * A simple RPC.
+     *
+     * Obtains the feature at a given position.
+     *
+     * A feature with an empty name is returned if there's no feature at the given
+     * position.
+     * @param \Routeguide\Point $argument input argument
+     * @param array $metadata metadata
+     * @param array $options call options
+     */
+    public function GetFeature(\Routeguide\Point $argument,
+      $metadata = [], $options = []) {
+      return $this->_simpleRequest('/routeguide.RouteGuide/GetFeature',
+      $argument,
+      ['\Routeguide\Feature', 'decode'],
+      $metadata, $options);
+    }
+
+    /**
+     * A server-to-client streaming RPC.
+     *
+     * Obtains the Features available within the given Rectangle.  Results are
+     * streamed rather than returned at once (e.g. in a response message with a
+     * repeated field), as the rectangle may cover a large area and contain a
+     * huge number of features.
+     * @param \Routeguide\Rectangle $argument input argument
+     * @param array $metadata metadata
+     * @param array $options call options
+     */
+    public function ListFeatures(\Routeguide\Rectangle $argument,
+      $metadata = [], $options = []) {
+      return $this->_serverStreamRequest('/routeguide.RouteGuide/ListFeatures',
+      $argument,
+      ['\Routeguide\Feature', 'decode'],
+      $metadata, $options);
+    }
+
+    /**
+     * A client-to-server streaming RPC.
+     *
+     * Accepts a stream of Points on a route being traversed, returning a
+     * RouteSummary when traversal is completed.
+     * @param array $metadata metadata
+     * @param array $options call options
+     */
+    public function RecordRoute($metadata = [], $options = []) {
+      return $this->_clientStreamRequest('/routeguide.RouteGuide/RecordRoute',
+      ['\Routeguide\RouteSummary','decode'],
+      $metadata, $options);
+    }
+
+    /**
+     * A Bidirectional streaming RPC.
+     *
+     * Accepts a stream of RouteNotes sent while a route is being traversed,
+     * while receiving other RouteNotes (e.g. from other users).
+     * @param array $metadata metadata
+     * @param array $options call options
+     */
+    public function RouteChat($metadata = [], $options = []) {
+      return $this->_bidiRequest('/routeguide.RouteGuide/RouteChat',
+      ['\Routeguide\RouteNote','decode'],
+      $metadata, $options);
+    }
+
+  }
+
+}
diff --git a/src/php/composer.json b/src/php/composer.json
index f352916..746474d 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -13,10 +13,8 @@
   "autoload": {
     "psr-4": {
       "Grpc\\": "lib/Grpc/",
-      "Grpc\\Testing\\": "tests/interop/Grpc/Testing/",
-      "GPBMetadata\\Src\\Proto\\Grpc\\Testing\\": "tests/interop/GPBMetadata/Src/Proto/Grpc/Testing/",
-      "Math\\": "tests/generated_code/Math/",
-      "GPBMetadata\\": "tests/generated_code/GPBMetadata/"
+      "": ["tests/interop/",
+           "tests/generated_code/"]
     }
   }
 }
diff --git a/templates/src/php/composer.json.template b/templates/src/php/composer.json.template
index 5223efd..08710d3 100644
--- a/templates/src/php/composer.json.template
+++ b/templates/src/php/composer.json.template
@@ -15,10 +15,8 @@
     "autoload": {
       "psr-4": {
         "Grpc\\": "lib/Grpc/",
-        "Grpc\\Testing\\": "tests/interop/Grpc/Testing/",
-        "GPBMetadata\\Src\\Proto\\Grpc\\Testing\\": "tests/interop/GPBMetadata/Src/Proto/Grpc/Testing/",
-        "Math\\": "tests/generated_code/Math/",
-        "GPBMetadata\\": "tests/generated_code/GPBMetadata/"
+        "": ["tests/interop/",
+             "tests/generated_code/"]
       }
     }
   }