title: rawurldecode does not decode euro sign
body: <p>I'm getting a textarea value with jQuery and using ajax to post it to the server.</p>
  
  <p>I'm using escape(textarea.val()) to encode the URL in jQuery.</p>
  
  <p>In my PHP script, I'm using rawurldecode to convert it back.</p>
  
  <p>This works for every character on my keyboard except the euro sign (€). Instead, it returns the hex code (%u20AC).</p>
  
  <p>I have no idea how to fix this, as far as I know all my charset settings are in order.</p>
  
  <p>Thanks</p>