Make php generated code conform to PSR-4. (#2435)

1. Generate single file for each message.
2. Lazily initiate metadata.

1 files changed, 7 insertions, 0 deletions

diff --git a/php/tests/proto/test_include.proto b/php/tests/proto/test_include.proto
new file mode 100644
index 00000000..9844617f
--- /dev/null
+++ b/php/tests/proto/test_include.proto
@@ -0,0 +1,7 @@
+syntax = "proto3";
+
+package bar;
+
+message TestInclude {
+  int32 a = 1;
+}