THRIFT-4460: Use PSR-2 as php library coding standard
Client: php

This closes #1472
diff --git a/lib/php/coding_standards.md b/lib/php/coding_standards.md
index fa0390b..e217539 100644
--- a/lib/php/coding_standards.md
+++ b/lib/php/coding_standards.md
@@ -1 +1,5 @@
-Please follow [General Coding Standards](/doc/coding_standards.md)
+## PHP Coding Standards
+
+Please follow:
+ * [Thrift General Coding Standards](/doc/coding_standards.md)
+ * [PSR-2](http://www.php-fig.org/psr/psr-2/)