anchor.diff:  
   $client = new EngineClient('http://localhost:8000');
   
  -$response = $client->sendQuery(array('items'=> 'i1', 'num'=> 4));
  +$response = $client->sendQuery(array('items'=> array('i1'), 'num'=> 4));
   print_r($response);
   
   ?>
   ```
     </div>
     <div data-tab="Ruby SDK" data-lang="ruby">
  -    (TODO: UPDATE ME)
  +
   ```ruby
   # Create client object.
  -client = PredictionIO::EngineClient.new(<ENGINE DEPLOY URL>)
  +client = PredictionIO::EngineClient.new('http://localhost:8000')
   
   # Query PredictionIO.
  -response = client.send_query('items' => <USER ID>, 'num' => <NUMBER (integer)>)
  +response = client.send_query('items' => ['i1'], 'num' => 4)
   
   puts response
   ```
     </div>
     <div data-tab="Java SDK" data-lang="java">
  -    (TODO: UPDATE ME)
  +
   ```java
   import com.google.common.collect.ImmutableMap;
  +import com.google.common.collect.ImmutableList;
   import com.google.gson.JsonObject;
   
   import io.prediction.EngineClient;
   
   // create client object
  -EngineClient engineClient = new EngineClient(<ENGINE DEPLOY URL>);
  +EngineClient engineClient = new EngineClient('http://localhost:8000');
   
   // query
  +
   JsonObject response = engineClient.sendQuery(ImmutableMap.<String, Object>of(
  -        "user", "1",
  +        "items", ImmutableList.of("i1"),
           "num",  4
       ));
   ```
  
positive.code: 160 events are imported.
  ```
  
  WARNING: If you see error **TypeError: __init__() got an unexpected keyword argument 'access_key'**, 
  please update the Python SDK to the latest version.
  
  ## Deploy the Engine as a Service
  
negative.code: # A user views an item
  
  client.create_event(
    event="view",
    entity_type="user",
    entity_id=<USER ID>,
    target_entity_type="item",
    target_entity_id=<ITEM ID>
  )
  ```
    </div>
    <div data-tab="PHP SDK" data-lang="php">
  
  ```php
  <?php
  require_once("vendor/autoload.php");
  