Combining Data textField's with CheckBox

Hi I am new to the Yii framework. Trying to figure out how to add 2 strings into one.

Right now I have textarea "description" and I want to add check boxes which will merge all into one.

Example: Someone enters into textarea "The flowers are"

Then I have a list of checkboxes

1- [x]Red

2- [ ]green

3- [x]white

4- [ ]yellow

With that selection "The flowers are Red, white" gets saved.

<?php echo $form->labelEx($model, ‘description’, array(‘class’ => ‘pull-left’, ‘style’ => ‘width:auto;’)); ?>

            &lt;div class=&quot;&lt;?php echo &#036;model-&gt;hasErrors('description') ? 'has-error' : '' ?&gt;&quot; style=&quot;margin-left: 100px;&quot;&gt;                            &lt;?php echo &#036;form-&gt;textArea(&#036;model, 'description', array('class' =&gt; 'form-control')); ?&gt;	 					

                        &lt;?php echo &#036;form-&gt;error(&#036;model, 'description', array('class' =&gt; 'help-block')); ?&gt;