Updating xml

programming
1

hellooo im new to PHP and XML


<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<content Name="PRODUCTS">
  <gallery Name="wood">
  
    <image Thumb="imagegallery/gallery1/thumb1.jpg" Large="imagegallery/gallery1/image1.jpg" Caption="Reflective Shapes">
    
        <copy><![CDATA[<font color="#FFFFFF" size="15"> This is the sample image ]]></copy>
    </image>   
 
</content>

This is my XML file i want to Add data to the file using a form
are their any one to help me