Method hasGroup for server group checking

Author: muxx

src/Dplr/Dplr.php

@@ -113,7 +113,7 @@ public function getServers()
      * Return servers list of group
      *
      * @access public
-     * @param  mixed $group
+     * @param  string $group
      * @return array
      */
     public function getServersByGroup($group)
@@ -128,6 +128,23 @@ public function getServersByGroup($group)
         return $servers;
     }
 
+    /**
+     * Check server group existing
+     *
+     * @param  string $group
+     * @return bool
+     */
+    public function hasGroup($group)
+    {
+        foreach ($this->servers as $serverName => $groups) {
+            if (in_array($group, $groups)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     /**
      * Creating new thread
      *