adjust to correct lowest requirements

Author: dbu

.travis.yml

@@ -16,7 +16,7 @@ matrix:
     - php: 5.5
       env: VARNISH_VERSION=3.0
     - php: 5.3.3
-      env: SYMFONY_VERSION=2.3.* COMPOSER_FLAGS="--prefer-lowest"
+      env: SYMFONY_VERSION=2.3.* VARNISH_VERSION=4.0 COMPOSER_FLAGS="--prefer-lowest"
 
 branches:
   only:

composer.json

@@ -22,14 +22,13 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "guzzle/guzzle": "~3.0",
+        "guzzle/guzzle": "~3.8",
         "symfony/event-dispatcher": "~2.3",
         "symfony/options-resolver": "~2.3"
     },
     "require-dev": {
-        "guzzle/plugin-mock": "*",
-        "mockery/mockery": "*",
-        "monolog/monolog": "*",
+        "mockery/mockery": "~0.9.1",
+        "monolog/monolog": "~1.0",
         "symfony/process": "~2.3",
         "symfony/http-kernel": "~2.3"
     },

src/SymfonyCache/PurgeSubscriber.php

@@ -50,7 +50,12 @@ class PurgeSubscriber extends AccessControlledSubscriber
     public function __construct(array $options = array())
     {
         $resolver = new OptionsResolver();
-        $resolver->setDefined(array('purge_client_matcher', 'purge_client_ips', 'purge_method'));
+        if (method_exists($resolver, 'setDefined')) {
+            // this was only added in symfony 2.6
+            $resolver->setDefined(array('purge_client_matcher', 'purge_client_ips', 'purge_method'));
+        } else {
+            $resolver->setOptional(array('purge_client_matcher', 'purge_client_ips', 'purge_method'));
+        }
         $resolver->setDefaults(array(
             'purge_client_matcher' => null,
             'purge_client_ips' => null,