travis: test on php 5.6-7.3 (#330)

diff --git a/.travis.yml b/.travis.yml
index 33148c3633f149edea5c8a68a8a984c1a30dd278..213081d394f2bf14c552ea59b2d4376e1761eb78 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 language: php
 php:
-  - '5.6'
-  - '7.1'
+  - 5.6
+  - 7.1
+  - 7.2
+  - 7.3
 script: git diff --name-only $TRAVIS_COMMIT_RANGE | grep '\.php$' | xargs -n1 -P8 php -l | grep -v 'No syntax errors'; test $? -eq 1