php: update example composer.json
diff --git a/examples/php/composer.json b/examples/php/composer.json
index c837bf7..950e113 100644
--- a/examples/php/composer.json
+++ b/examples/php/composer.json
@@ -9,6 +9,6 @@
     }
   ],
   "require": {
-    "grpc/grpc": "dev-release-0_13"
+    "grpc/grpc": "v0.15.0"
   }
 }
diff --git a/src/php/composer.json b/src/php/composer.json
index 01674a2..2ad7322 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -2,7 +2,6 @@
   "name": "grpc/grpc",
   "type": "library",
   "description": "gRPC library for PHP",
-  "version": "0.14.0",
   "keywords": ["rpc"],
   "homepage": "http://grpc.io",
   "license": "BSD-3-Clause",