name="wcpdf_settings[wpo_wcpdf_documents_settings_invoice][display_shipping_address]" value="1">
name="wcpdf_settings[wpo_wcpdf_documents_settings_invoice][display_email]" value="1">
name="wcpdf_settings[wpo_wcpdf_documents_settings_invoice][display_phone]" value="1">
name="wcpdf_settings[wpo_wcpdf_documents_settings_invoice][display_date]" value="invoice_date">
name="wcpdf_settings[wpo_wcpdf_documents_settings_invoice][display_number]" value="invoice_number">