Require php 5.5

Author: Nyholm

.travis.yml

@@ -9,7 +9,7 @@ branches:
     - /^patch-.*$/
 
 php:
-    - 5.4
+    - 5.5
     - 7.1
     - hhvm
 env:
@@ -24,7 +24,7 @@ env:
 matrix:
   fast_finish: true
   include:
-    - php: 5.4
+    - php: 5.5
       env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" COVERAGE=true TEST_COMMAND="composer test-ci" SYMFONY_VERSION=2.3.*
 
 install:

composer.json

@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": "^5.4 || ^7.0"
+        "php": "^5.5 || ^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.5 || ^5.4",