only support php ^7.1

.travis.yml

@@ -2,18 +2,6 @@ language: php
 
 matrix:
   include:
-    - php: 5.6
-      env:
-        - DEPS=lowest
-    - php: 5.6
-      env:
-        - DEPS=latest
-    - php: 7.0
-      env:
-        - DEPS=lowest
-    - php: 7.0
-      env:
-        - DEPS=latest
     - php: 7.1
       env:
         - DEPS=lowest
@@ -26,11 +14,10 @@ before_script:
   - composer self-update
   - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable --no-interaction ; fi
   - if [[ $DEPS == 'latest' ]]; then travis_retry composer install --prefer-source --no-interaction ; fi
-  - if [[ $TRAVIS_PHP_VERSION = 7.1 ]]; then composer global require --dev phpstan/phpstan; fi
   - composer dump-autoload -o
 
 script:
-  - if [[ $TRAVIS_PHP_VERSION = 7.1 ]]; then ~/.composer/vendor/bin/phpstan analyse src/ --level=5 -c phpstan.neon; fi
+  - bin/phpstan analyse src/ --level=7
   - bin/kahlan --coverage=4 --reporter=verbose --clover=build/logs/clover.xml
   - bin/coveralls -v --exclude-no-stmt
 

composer.json

@@ -14,11 +14,12 @@
         }
     ],
     "require": {
-        "php": "^5.6|^7.0",
+        "php": "^7.1",
         "zendframework/zend-json": "^2.5|^3.0"
     },
     "require-dev": {
         "kahlan/kahlan": "^3.0.0",
+        "phpstan/phpstan": "^0.6.4 || ^1.0",
         "satooshi/php-coveralls": "^1.0",
         "zendframework/zend-http": "^2.5",
         "zendframework/zend-servicemanager": "^2.5|^3.0"