title: Remove non-ascii characters from string
body: <p>I'm getting strange characters when pulling data from a website:</p>
  <pre><code>Â
  </code></pre>
  <p>How can I remove anything that isn't a non-extended ASCII character?</p>
  <hr />
  <p>A more appropriate question can be found here:
  <a href="https://stackoverflow.com/questions/17115867/php-replace-all-non-alphanumeric-chars-for-all-languages-supported">PHP - replace all non-alphanumeric chars for all languages supported</a></p>