title: ï»¿ encoding issue
body: <p>I'm developing a website using PHP and these strange chars "ï»¿" appears in my page, right on the top of it.
  My code is this: </p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;&lt;?php echo '';?&gt;
  &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;
  &lt;meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /&gt;
  </code></pre>
  
  <p>But when I see the source code in the browser, it shows this:</p>
  
  <pre><code>ï»¿&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;
  &lt;meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /&gt;
  </code></pre>
  
  <p>I don't know if has any relation to the encoding I'm using, because when I change the charset to <code>charset=utf-8</code> it disappears but I must use iso-8859-1</p>