Allow scheme config from env vars (#209)

* Allow scheme config from env vars

* Fix condition

* Add new config to readme file

* Update includes/common.inc.php

---------

Co-authored-by: Erik Dubbelboer <erik@dubbelboer.com>

Author: arielectron

README.markdown

@@ -55,6 +55,7 @@ Environment variables summary
 * ``REDIS_1_HOST`` - define host of the Redis server
 * ``REDIS_1_NAME`` - define name of the Redis server
 * ``REDIS_1_PORT`` - define port of the Redis server
+* ``REDIS_1_SCHEME`` - define scheme of the Redis server (tcp or tls)
 * ``REDIS_1_AUTH`` - define password of the Redis server
 * ``REDIS_1_AUTH_FILE`` - define file containing the password of the Redis server
 * ``REDIS_1_DATABASES`` - You can modify you config to prevent phpRedisAdmin from using CONFIG command 

includes/common.inc.php

@@ -113,11 +113,15 @@
   $config['showEmptyNamespaceAsKey'] = false;
 }
 
+if (!isset($config['scheme']) || empty($config['scheme'])) {
+  $config['scheme'] = 'tcp';
+}
+
 // Setup a connection to Redis.
-if(isset($server['scheme']) && $server['scheme'] === 'unix' && $server['path']) {
+if ($server['scheme'] === 'unix' && $server['path']) {
   $redis = new Predis\Client(array('scheme' => 'unix', 'path' => $server['path']));
 } else {
-  $redis = !$server['port'] ? new Predis\Client($server['host']) : new Predis\Client('tcp://'.$server['host'].':'.$server['port']);
+  $redis = !$server['port'] ? new Predis\Client($server['host']) : new Predis\Client($server['scheme'].'://'.$server['host'].':'.$server['port']);
 }
 
 try {

includes/config.environment.inc.php

@@ -36,6 +36,7 @@
   $server_name = getenv($prefix . 'NAME');
   $server_host = getenv($prefix . 'HOST');
   $server_port = getenv($prefix . 'PORT');
+  $server_scheme = getenv($prefix . 'SCHEME');
   if (getenv($prefix . 'AUTH_FILE') !== false) {
     $server_auth = file_get_contents(getenv($prefix . 'AUTH_FILE'));
   } else {
@@ -55,17 +56,22 @@
     $server_auth = "";
   }
 
-  if (empty($server_port)) {
+  if (empty($server_port) && strpos($server_host, ':') === false) {
     $server_port = 6379;
   }
 
+  if (empty($server_scheme)) {
+    $server_scheme = 'tcp';
+  }
+
   $config['servers'][] = array(
       'name'     => $server_name,
       'host'     => $server_host,
       'port'     => $server_port,
       'filter'   => $config['filter'],
       'scansize' => $config['scansize'],
       'scanmax'  => $config['scanmax'],
+      'scheme'   => $server_scheme,
   );
 
   if (!empty($server_auth)) {