SimpleSAMLphp is not compatible with PHP 7.2.

RoSk0 · RoSk0 · commit 817c8aaaf12f · 2018-09-10T10:46:27.000+12:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,6 @@ php:
    - '5.6'
    - '7.0'
    - '7.1'
-   - '7.2'
 
 before_script: composer install
 script: ./vendor/bin/phpunit
