si infatti ho fatto così, ci ho pensato dopo:
Codice PHP:
        <div id="container">
            <?php
            
foreach ($query as $art):
                
$artQta $art['ftr_qta'];
                for (
$i 0$i $artQta$i++):
                    
$ean13 $art['articolo_ean'];
                    
?>
                    <div class="div_barcode <?php echo $col23?>">
                        <div class="art_desc">
                            <?php echo $art['articolo_descrizione_ita']; ?>
                        </div>
                        <div class="cont_bar">
                            <input type="hidden" value="<?php echo $ean13?>">
                        </div>
                        <strong class="size"><?php echo $art['articolo_taglia']; ?></strong>
                        <div class="clearfix"></div>
                        <span class="ean"><?php echo $ean13?></span>
                        <div class="clearfix"></div>
                        <span class="art_cod_col"><?php echo $art['articolo_codice']; ?></span>
                        <strong class="prezzo">€ <?php echo $art['listino_modificato']; ?></strong>
                        <div class="clearfix"></div>
                    </div>
                    <?php
                
endfor;
            endforeach;
            
?>
        </div>
mi stavo complicando la vita inutilmente!