title: Processing of an html-form that consists of buttons
body: <p>I have an html-form which includes some information to be sent to the php-script. The type of an input of this information is "button". It is important that all the values are saved.</p>
  
  <pre><code>&lt;form name="CoordinatesReceiving" method="get" action="MainScript.php"&gt;
     &lt;p&gt; Insert the coordinates of the point: &lt;/p&gt;
     &lt;label&gt; Insert X &lt;input type="button" name="xCoordinate" id="xCoordinate" value="1"&gt; &lt;/label&gt; &lt;br&gt;
     &lt;label&gt; Insert R &lt;input type="button" name="radius" id="radius" value="5"&gt; &lt;/label&gt; &lt;br&gt;
     &lt;input type="submit" name="send" value="Send."&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>The form has to "remember" that I pressed these buttons and send them to the server.
  How can I implement this?</p>