Upgrade dependencies / PHP >= 5.6

Author: tvdijen

.travis.yml

@@ -3,7 +3,6 @@ sudo: required
 language: php
 
 php:
-  - 5.5
   - 5.6
   - 7.0
   - 7.1

bin/check-syntax.sh

@@ -4,7 +4,7 @@ PHP='/usr/bin/env php'
 RETURN=0
 
 # check PHP files
-for FILE in `find config-templates lib www -name "*.php"`; do
+for FILE in `find config-templates lib tests www -name "*.php"`; do
     $PHP -l $FILE > /dev/null 2>&1
     if [ $? -ne 0 ]; then
         echo "Syntax check failed for ${FILE}"

composer.json

@@ -36,7 +36,7 @@
   },
   "require-dev": {
     "simplesamlphp/simplesamlphp": "^1.17",
-    "phpunit/phpunit": "~4.8.36"
+    "phpunit/phpunit": "~5.7"
   },
   "support": {
     "issues": "https://github.com/simplesamlphp/simplesamlphp-module-cdc/issues",