production.
=== PHP version requirement ===
-As of 1.27, MediaWiki now requires PHP 5.5.9 or higher. This corresponds with
-HHVM 3.1. Additionally, the following PHP extensions are required:
+As of 1.27, MediaWiki now requires PHP 5.5.9 or higher (see Compatibility
+section). Additionally, the following PHP extensions are required:
* ctype
* iconv
* json