HELP MY

Double post.

Tu dois les mettre entre

juste avant l'accolade de fermeture de ta boucle while rajoute
echo '<br/>';

J'ai une erreur

FPDF error: Some data has already been output, can't send PDF file

rajoute echo '<br/>';.

Ca ne fonctionne pas le pdf ne s'ouvre pas voici le code complet du pdf.
$pdf->addReference("Devis ... du ....");
$cols=array( "REFERENCE" => 23,
"DESIGNATION" => 78,
"QUANTITE" => 22,
"P.U. HT" => 26,
"MONTANT H.T." => 30,
"TVA" => 11 );
$pdf->addCols( $cols);
$cols=array( "REFERENCE" => "L",
"DESIGNATION" => "L",
"QUANTITE" => "C",
"P.U. HT" => "R",
"MONTANT H.T." => "R",
"TVA" => "C" );
$pdf->addLineFormat( $cols);
$pdf->addLineFormat($cols);

$cmd = $_GET['cmd'];
$nom_client = $_GET['nom_client'];
$connection = mysql_connect("$sql_serveur","$sql_login","$sql_pass");
// test la connection
if ( ! $connection ) die ("connection impossible");
// Connecte la base
mysql_select_db($sql_bdd) or die ("pas de connection");

// RECHERCHE SI ON A LA FAMILLE DANS STAT SINON ON AFFICHE 0
$found=mysql_query("SELECT nom_client FROM commande")
or die(mysql_error());
$nb1=mysql_numrows($found);
if($nb1<>"0"){$erreur='Y';}else{$erreur='N';}

if($erreur=='Y')
{

$select = "SELECT * FROM commande WHERE cmd='$cmd' AND nom_client='$nom_client'";
$result = mysql_query($select,$connection) or die ('Erreur : '.mysql_error() );
while($row = mysql_fetch_array($result))
{
$rowid1 = $row['id'];
$rowid = $row['nom'];
$rowprix = $row['prix'];
$rowday = $row['cde'];
$rowpx = $row['pxligne'];

$y = 109;
$line = array( "REFERENCE" => "$rowid1",
"DESIGNATION" => "$rowid",
"QUANTITE" => "$rowday",
"P.U. HT" => "$rowprix",
"MONTANT H.T." => "$rowpx",
"TVA" => "1");

$size = $pdf->addLine( $y, $line );
$y+= $size + 3;

echo '<br/>';.
}
if($erreur=='N')
{
}
}

Personne na de reponse a ma question j'ai besoin d'aide merci
j'ai esseiller plusieur chose ne vain