title: XML/PHP : Content is not allowed in prolog
body: <p>i have this message error and i don't know where does the problem comes from:</p>
  
  <pre><code>&lt;?php include "DBconnection.class.php";
  
  $sql = DBConnection::getInstance(); 
  
  $requete = "my resquest (which is working)";
  
  $sql-&gt;query($requete);  
  
   $xml = '&lt;?xml version="1.0" encoding="UTF-8"?&gt;';
   $xml .='&lt;GamerCertified&gt;';
  
  
              while($row = $sql-&gt;fetchArray()){
  
              $moyenne_services =  ($row['services'] + $row['serviceCli']  + $row['interface'] )/3;
              $moyenne_services = round( $moyenne_services,1);
  
              $moyenne_ge =  ($row['services'] + $row['serviceCli']  + $row['interface'] + $row['qualite'] + $row['rapport'] ) /5;
              $moyenne_ge = round( $moyenne_ge,1);
  
               $xml .= '&lt;GSP&gt;';
  
               $xml .= '&lt;nom&gt;'.$row["nom"].'&lt;/nom&gt;';
  
               $xml .= '&lt;votes&gt;'.$row["nb_votes"].'&lt;/votes&gt;';
  
               $xml .= '&lt;services&gt;'.$moyenne_services.'&lt;/services&gt;';
  
               $xml .= '&lt;qualite&gt;'.$row["qualite"].'&lt;/qualite&gt;';
  
               $xml .= '&lt;prix&gt;'.$row["rapport"].'&lt;/prix&gt;';
  
               $xml .= '&lt;transparence&gt;'.$row["transparence"].'&lt;/transparence&gt;';
  
                $xml .= '&lt;moyenneGenerale&gt;'.$moyenne_ge.'&lt;/moyenneGenerale&gt;'; 
  
               $xml .= '&lt;serveursDedies&gt;'.$row["offreDedie"].'&lt;/serveursDedies&gt;';
  
               $xml .= '&lt;/GSP&gt;';
          }
  
  
   $xml .= '&lt;/GamerCertified&gt;';
   echo $xml;
  </code></pre>
  
  <p>Thanks</p>
  
  <p>(PS: FF /chrome echoes that without tag : bc2x56.99.89.8081ckras1710.09.0080crazy-fun-game11010.010.00100crystal-serv349.79.69.509.60dedicore69.49.38.609.21)</p>