I got an Array like this:

```
array('Testing'=>array(
'topic'=>$data['Testing']['topic'], 
'content'=>$data['Testing']'content'])
             ); 

```

Now I have got some new data to add into the Array shown aboved,  

how can I do it so that the new Array will look like this:

```
array('Testing'=>array(
'topic'=>$data['Testing']['topic'], 
'content'=>$data['Testing']['content']),
'new'=>$data['Testing']['new'])
                 ); 

```

Could you help me please?