Add file option php_class_prefix (#2849)

This option will be prepended to generated classes of all messages in
the containing file.

2 files changed, 12 insertions, 0 deletions

diff --git a/php/tests/proto/test.proto b/php/tests/proto/test.proto
index e5dee0fb..1a47a3f2 100644
--- a/php/tests/proto/test.proto
+++ b/php/tests/proto/test.proto
@@ -1,6 +1,7 @@
 syntax = "proto3";
 
 import 'proto/test_include.proto';
+import 'proto/test_prefix.proto';
 
 package foo;
 
@@ -142,3 +143,7 @@ message TestUnpackedMessage {
 message TestPhpDoc {
   int32 a = 1;
 }
+
+message TestIncludePrefixMessage {
+  TestPrefix prefix_message = 1;
+}
diff --git a/php/tests/proto/test_prefix.proto b/php/tests/proto/test_prefix.proto
new file mode 100644
index 00000000..04582121
--- /dev/null
+++ b/php/tests/proto/test_prefix.proto
@@ -0,0 +1,7 @@
+syntax = "proto3";
+
+option php_class_prefix = "Prefix";
+
+message TestPrefix {
+  int32 a = 1;
+}