title: How can I call a web page in App Inventor?
body: <p>I made a PHP code which will turn off and on led.
  <a href="http://x.x.x.xx/va.php?on=ON" rel="nofollow noreferrer">http://x.x.x.xx/va.php?on=ON</a> (LED will turn on)
  <a href="http://x.x.x.xx/va.php?off=OFF" rel="nofollow noreferrer">http://x.x.x.xx/va.php?off=OFF</a> (LED will turn off)</p>
  
  <p>and also two buttons for ON and OFF in App Inventor.</p>
  
  <p>This link <a href="https://stackoverflow.com/questions/28869954/how-can-i-open-a-web-page-in-app-inventor">How can I open a web page in App Inventor</a> shows perfect solution on how to open a web page. </p>
  
  <p><strong>But</strong> what I want is whenever I click ON, it will call the PHP without go to the PHP page directly. How to do that? </p>
  
  <p>Thanks</p>