index.php

<?php
//echo '<p>This is PHP</p>';

if(isset($_GET["FirstName"])){//show feedback
  //echo $_GET["FirstName"];
  
  echo '<pre>';
  var_dump($_GET);
  echo '</pre>';
  
  
}else{//show form
  echo '
  <form action="">
  <p>First Name: <input type="text" name="FirstName"  /></p>
  <p>Last Name: <input type="text" name="LastName"  /></p>
  
  <p>Favorite Color:</p>
  <p><input type="radio" name="FavoriteColor" value="red" /> Red </p>
  <p><input type="radio" name="FavoriteColor" value="blue" /> Blue </p>
  <p><input type="radio" name="FavoriteColor" value="purple" /> Purple </p>
  
  <p>Sundae Toppings:</p>
  <p><input type="radio" name="Toppings[]" value="oreos" /> Oreos </p>
  <p><input type="radio" name="Toppings[]" value="whipped cream" /> Whipped Cream </p>
  <p><input type="radio" name="Toppings[]" value="crushed nuts" /> Crushed Nuts </p>
  <input type="submit" />
  </form>
  ';
}



?>