PHPMailer::addStringAttachment( string $string, string $filename, string $encoding = self::ENCODING_BASE64, string $type = '', string $disposition = 'attachment' ): bool

3756    public function addStringAttachment(3757        $string,3758        $filename,3759        $encoding = self::ENCODING_BASE64,3760        $type = '',3761        $disposition = 'attachment'3762    ) {3763        try {3764            //If a MIME type is not specified, try to work it out from the file name3765            if ('' === $type) {3766                $type = static::filenameToType($filename);3767            }3768 3769            if (!$this->validateEncoding($encoding)) {3770                throw new Exception($this->lang('encoding') . $encoding);3771            }3772 3773            //Append to $attachment array3774            $this->attachment[] = [3775                0 => $string,3776                1 => $filename,3777                2 => static::mb_pathinfo($filename, PATHINFO_BASENAME),3778                3 => $encoding,3779                4 => $type,3780                5 => true, //isStringAttachment3781                6 => $disposition,3782                7 => 0,3783            ];3784        } catch (Exception $exc) {3785            $this->setError($exc->getMessage());3786            $this->edebug($exc->getMessage());3787            if ($this->exceptions) {3788                throw $exc;3789            }3790 3791            return false;3792        }3793 3794        return true;3795    }