Update README.md

Add guidance that pure PHP implementation requires bcmath.
2 years ago · 0cb3c44311
parent e58ff9821b
commit 0cb3c44311
1 changed files with 2 additions and 0 deletions
--- a/php/README.md
+++ b/php/README.md
@ -65,6 +65,8 @@ sudo pecl install protobuf-{VERSION}
 Simply add "google/protobuf" to the 'require' section of composer.json in your
 project.

+To use the pure PHP implementation, you need to install bcmath.
+
 ### Protoc

 Once the extension or package is installed, if you wish to generate PHP code