The minimal requirement for PHP is 7.1 (symfony#119)

Mickaël Andrieu · dunglas · commit 4d647a4279d6 · 2018-10-10T22:18:05.000+02:00
* The minimal requirement for PHP is 7.1

* by default, cinst install PHP 7.2.8 at this moment

* Added PHP 7.2 to the Travis matrix
diff --git a/README.md b/README.md
@@ -217,6 +217,7 @@ addons:
   chrome: stable
 
 php:
+  - 7.1
   - 7.2
 
 script:

-Original file line number
+Diff line change
   chrome: stable
 php:
 +  - 7.1
   - 7.2
 script: