apply_filters( 'learndash_purchase_invoice_pdf_username', string $user_name, int $user_id, int $purchase_invoice_id )
Filters username of the user to be used in creating purchase_invoice PDF.
apply_filters( 'learndash_purchase_invoice_pdf_username', string $user_name, int $user_id, int $purchase_invoice_id )
Filters username of the user to be used in creating purchase_invoice PDF.