/** * Constructor */ function BCGcode39extended() { // public BCGcode39::BCGcode39(); // We just put parenthesis around special characters. $this->keys[$this->EXTENDED_1] = '($)'; $this->keys[$this->EXTENDED_2] = '(/)'; $this->keys[$this->EXTENDED_3] = '(+)'; $this->keys[$this->EXTENDED_4] = '(%)'; $this->errorText = ''; }