Modifying Headers in WooCommerce PDF Invoice

gistfile1.php

/**
 * Modifying Headers 
 *
 * Add to your theme functions.php
 */  
add_filter( 'pdf_template_table_headings','custom_pdf_template_table_headings' );
function custom_pdf_template_table_headings( $headers ) {
	$headers =  '<table class="shop_table orderdetails" width="100%">' . 
	'<thead>' .
	'<tr><th colspan="7" align="left"><h2>' . esc_html__('Order Details', PDFLANGUAGE) . '</h2></th></tr>' .
	'<tr>' .
	'<th width="10%" valign="top" align="right">'  . __( 'Qty', PDFLANGUAGE ) 		. '</th>' .
	'<th width="54%" valign="top" align="left">'  . __( 'Product', PDFLANGUAGE ) 	. '</th>' .
	'<th width="18%" valign="top" align="right">' . __( 'Price Inc', PDFLANGUAGE ) 	. '</th>' .
	'<th width="18%" valign="top" align="right">' . __( 'Total Inc', PDFLANGUAGE ) 	. '</th>' .
	'</tr>' .
	'</thead>' .
	'</table>';	
    
    return $headers;	
}
 
add_filter( 'pdf_template_line_output' , 'custom_pdf_template_line_output', 10, 2 );
function custom_pdf_template_line_output( $pdflines, $order_id ) {
	global $woocommerce;
	$order 	 = new WC_Order( $order_id );

	$order_currency = $order->get_currency();
	
	$pdflines  = '<table width="100%">';
	$pdflines .= '<tbody>';
	
	if ( sizeof( $order->get_items() ) > 0 ) : 

		foreach ( $order->get_items() as $item ) {

			if ( $item['qty'] ) {
	
				$line = '';
				// $item_loop++;

				$_product 	= $order->get_product_from_item( $item );
				$item_name 	= $item['name'];
				$item_meta 	= new WC_Order_Item_Meta( $item['item_meta'] );
	
				if ( $meta = $item_meta->display( true, true ) )
					$item_name .= ' ( ' . $meta . ' )';
	
				$line =  	'<tr>' .
							'<td valign="top" width="10%" align="right">' . $item['qty'] . ' x</td>' .
							'<td valign="top" width="54%">' .  $item_name . '</td>' .
							'<td valign="top" width="18%" align="right">' .  wc_price( ( $item['line_subtotal'] + $item['line_tax'] ) / $item['qty'], array( 'currency' => $order_currency ) ) . '</td>' .
							'<td valign="top" width="18%" align="right">' .  wc_price( $item['line_subtotal'] + $item['line_tax'], array( 'currency' => $order_currency ) ) . '</td>' .
							'</tr>' ;
	
				$pdflines .= $line;
			}
		}

	endif;

	$pdflines .=	'</tbody>';
	$pdflines .=	'</table>';

	return $pdflines;
}
/* Close Modifying Headers */

Bonjour,
ou on peux mettre le code source dans woocommerce ?
MERCI