Show php extension version

.travis.yml

@@ -19,7 +19,7 @@ env:
         - MIN_PHP=7.1.3
         - SYMFONY_PROCESS_PHP_TEST_BINARY=~/.phpenv/shims/php
         - MESSENGER_AMQP_DSN=amqp://localhost/%2f/messages
-        - MESSENGER_REDIS_DSN=redis://localhost/messages
+        - MESSENGER_REDIS_DSN=redis://127.0.0.1:7000/messages
 
 matrix:
     include:
@@ -165,8 +165,11 @@ before_install:
           tfold ext.igbinary tpecl igbinary-2.0.8 igbinary.so $INI
           tfold ext.zookeeper tpecl zookeeper-0.7.1 zookeeper.so $INI
           tfold ext.amqp tpecl amqp-1.9.4 amqp.so $INI
-          tfold ext.redis tpecl redis-4.2.0 redis.so $INI "no"
+          tfold ext.redis tpecl redis-4.3.0 redis.so $INI "no"
       done
+    - |
+      # List all php extensions with versions
+    - php -r 'foreach (get_loaded_extensions() as $extension) echo $extension . " " . phpversion($extension) . PHP_EOL;'
 
     - |
       # Load fixtures