Make php generated code conform to PSR-4. (#2435)
1. Generate single file for each message.
2. Lazily initiate metadata.
diff --git a/php/phpunit.xml b/php/phpunit.xml
new file mode 100644
index 0000000..0191a60
--- /dev/null
+++ b/php/phpunit.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit bootstrap="./vendor/autoload.php"
+ colors="true">
+ <testsuites>
+ <testsuite name="protobuf-tests">
+ <file>tests/php_implementation_test.php</file>
+ <file>tests/array_test.php</file>
+ <file>tests/encode_decode_test.php</file>
+ <file>tests/generated_class_test.php</file>
+ <file>tests/map_field_test.php</file>
+ <file>tests/well_known_test.php</file>
+ </testsuite>
+ </testsuites>
+</phpunit>
