Penso basti applicare la formattazione corretta qui:

Codice PHP:
                                               $this->createNodeWithTextContent(
                                                               
$doc,
                                                               
'Qty',
                                                               
$lineContent[10],
                                                               
$rowNode
                                               
); 
Hai anche un esempio già pronto...


Codice PHP:
            $this->createNodeWithTextContent(
                
$doc,
                
'Price',
                
str_replace(',''.'$lineContent[16]),
                
$rowNode
            
);