title: PHP requests with multiple query strings
body: <p>I can always test this, but I wanted an official answer from a PHP expert (something I am most certainly not).</p>
  
  <p>If someone makes a request like this:</p>
  
  <pre><code>http://www.somedomain.com/a.php?param1=value1&amp;param2=value2&amp;param3=value3?param1=value4&amp;param2=value5&amp;param3=value6
  </code></pre>
  
  <p>What kinds of consequences are there when I try to access <code>_GET['param2']</code>, for example? It looks like I just get the first value. In this case, it would return <code>value2</code>. Is that expected behavior?</p>
  
  <p>Does the second question mark affect anything? Will there be errors, for example?</p>