diff --git a/config.m4 b/config.m4
index f6f8531b2fd..393250fff11 100644
--- a/config.m4
+++ b/config.m4
@@ -12,7 +12,7 @@ if test "$PHP_GRPC" != "no"; then
   LIBS="-lpthread $LIBS"
 
   CFLAGS="-Wall -Werror -Wno-parentheses-equality -Wno-unused-value -std=c11"
-  CXXFLAGS="-std=c++11"
+  CXXFLAGS="-std=c++11 -fno-exceptions -fno-rtti"
   GRPC_SHARED_LIBADD="-lpthread $GRPC_SHARED_LIBADD"
   PHP_REQUIRE_CXX()
   PHP_ADD_LIBRARY(pthread)
diff --git a/templates/config.m4.template b/templates/config.m4.template
index f91893c2bd3..cd93fbd0fbe 100644
--- a/templates/config.m4.template
+++ b/templates/config.m4.template
@@ -14,7 +14,7 @@
     LIBS="-lpthread $LIBS"
 
     CFLAGS="-Wall -Werror -Wno-parentheses-equality -Wno-unused-value -std=c11"
-    CXXFLAGS="-std=c++11"
+    CXXFLAGS="-std=c++11 -fno-exceptions -fno-rtti"
     GRPC_SHARED_LIBADD="-lpthread $GRPC_SHARED_LIBADD"
     PHP_REQUIRE_CXX()
     PHP_ADD_LIBRARY(pthread)