Require PHP 7

.travis.yml

@@ -3,25 +3,23 @@ language: php
 sudo: false
 
 php:
-  - 5.5
-  - 5.6
   - 7.0
   - 7.1
   - hhvm
 
 matrix:
   include:
-    - php: 5.5
+    - php: 7.0
       env: dependencies=lowest
 
 before_script:
-  - if [[ $(phpenv version-name) == '5.6' ]]; then composer require satooshi/php-coveralls:dev-master -n ; fi
-  - if [[ $(phpenv version-name) != '5.6' ]]; then composer install -n ; fi
+  - if [[ $(phpenv version-name) == '7.1' ]]; then composer require satooshi/php-coveralls:dev-master -n ; fi
+  - if [[ $(phpenv version-name) != '7.1' ]]; then composer install -n ; fi
   - if [ "$dependencies" = "lowest" ]; then composer update --prefer-lowest --prefer-stable -n; fi;
 
 script:
-  - if [[ $(phpenv version-name) == '5.6' ]]; then vendor/bin/phpunit --coverage-clover clover.xml ; fi
-  - if [[ $(phpenv version-name) != '5.6' ]]; then vendor/bin/phpunit ; fi
+  - if [[ $(phpenv version-name) == '7.1' ]]; then vendor/bin/phpunit --coverage-clover clover.xml ; fi
+  - if [[ $(phpenv version-name) != '7.1' ]]; then vendor/bin/phpunit ; fi
 
 after_script:
-  - if [[ $(phpenv version-name) == '5.6' ]]; then php vendor/bin/coveralls -v ; fi
+  - if [[ $(phpenv version-name) == '7.1' ]]; then php vendor/bin/coveralls -v ; fi

change-log.md

@@ -4,6 +4,7 @@
 
 BC breaks:
 
+- PHP 7 or greater is required
 - The deprecated `DI\link()` helper was removed, used `DI\get()` instead
 
 ## 5.4

composer.json

@@ -23,13 +23,13 @@
         "test": "phpunit"
     },
     "require": {
-        "php": ">=5.5.0",
+        "php": ">=7.0.0",
         "container-interop/container-interop": "~1.0",
         "php-di/invoker": "^1.3.2",
         "php-di/phpdoc-reader": "^2.0.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.5",
+        "phpunit/phpunit": "~5.0",
         "mnapoli/phpunit-easymock": "~0.2.0",
         "doctrine/cache": "~1.4",
         "doctrine/annotations": "~1.2",

doc/migration/6.0.md

@@ -9,6 +9,10 @@ PHP-DI 6.0 is a new major version that comes with backward compatibility breaks.
 
 This guide will help you migrate from a 5.x version to 6.0. It will only explain backward compatibility breaks, it will not present the new features (read the release notes or the blog post for that).
 
+## PHP version
+
+PHP-DI requires PHP 7 or greater, it is no longer compatible with PHP 5.
+
 ## Definitions
 
 ### DI\link()