title: PHP Convert variable names to lowercase?
body: <p>I have an api listener script which takes in get parameters. But I seem to be having issues when users tend to pass mixed case variable names on the parameters.</p>
  
  <p>For example:</p>
  
  <pre><code>http://mylistenerurl.com?paramName1=Hello&amp;paramname2=World
  </code></pre>
  
  <p>I need my listener to be flixible in such a way that the variable names will be interpreted case-insensitively or rather still all in lower case like after I process the query string on some function, they are all returned as lower-cased variables:</p>
  
  <pre><code>extract(someFunction($_GET));
  process($paramname1, $paramname2);
  </code></pre>
  
  <p>Can anybody shed some light on this?</p>
  
  <p>*much appreciated. thanks!</p>