Customer/Order CSV Export - Replace line item meta delimiter with a semi-colon

wc-csv-export-line-item-meta-delimiter.php

function sv_wc_csv_export_replace_line_item_delimiter( $order_data ) {

	// temporarily replace the line item delimiter
	$order_data['line_items'] = str_replace( ';', '>>>', $order_data['line_items'] );

	// replace the line item meta delimiter with ;
	$order_data['line_items'] = str_replace( '|', ';', $order_data['line_items'] );

	// replace the temporary line item delimiter with |
	$order_data['line_items'] = str_replace( '>>>', '|', $order_data['line_items'] );

	return $order_data;
}
add_filter( 'wc_customer_order_csv_export_order_row', 'sv_wc_csv_export_replace_line_item_delimiter' );