Try building against PHP 7.4

nikic · nikic · commit 11e25008968c · 2019-02-11T10:07:23.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,7 @@ php:
   - 7.1
   - 7.2
   - 7.3
+  - 7.4snapshot
   - nightly
 
 before_script:
