title: PHP Form with Button
body: <p>I have some experience in JAVA GUI programming and I want to achieve the same in a PHP form.</p>
  
  <p>Situation: I want to have a php form with a submit button. When the button is pressed an ActionEvent should be called to update another part of the form.</p>
  
  <p>How to implement such a feature with HTML,PHP,JAVASCRIPT ?</p>