title: Push associative array to an existing associative array
body: <p>I'm fetching data from a MySQL query into a private $this->_data.<br>
  But I am also filling in the data from another table to $this->_data.<br><br>
  Is there an easier way to do this ?</p>
  
  <pre><code>$this-&gt;_data = $row; # This fetches data from a MySQL query
  
  # This works
  $this-&gt;_data['Salary'] = '';
  .
  .
  .
  $this-&gt;_data['Growth'] = '';
  
  # This doesn't. Give s Parse error: syntax error, unexpected '=&gt;' (T_DOUBLE_ARROW), expecting ']'
  $this-&gt;_data['Salary' =&gt; '',
               .
               .
               .
               'Growth' =&gt; ''
               ];
  </code></pre>