[gtksourceview] php.lang: use 'common-function' context

[Christian Hergert <chergert src gnome org>]

commit 96ed0c4a523f492295f202ecafbb020be9cb45d2
Author: Vlasta Vesely <vlastavesely protonmail ch>
Date:   Tue Aug 6 13:54:44 2019 +0200

    php.lang: use 'common-function' context

 data/language-specs/php.lang | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/language-specs/php.lang b/data/language-specs/php.lang
index a0cbaf4f..17d7b796 100644
--- a/data/language-specs/php.lang
+++ b/data/language-specs/php.lang
@@ -337,6 +337,7 @@
         <context ref="variable"/>
         <context ref="array-operators"/>
         <context ref="keywords"/>
+        <context ref="common-function"/>
         <context ref="operators"/>
         <context ref="type"/>
         <context ref="null-value"/>