PHPMailer::attachAll( string $disposition_type, string $boundary ): string

3531    protected function attachAll($disposition_type, $boundary)3532    {3533        //Return text of body3534        $mime = [];3535        $cidUniq = [];3536        $incl = [];3537 3538        //Add all attachments3539        foreach ($this->attachment as $attachment) {3540            //Check if it is a valid disposition_filter3541            if ($attachment[6] === $disposition_type) {3542                //Check for string attachment3543                $string = '';3544                $path = '';3545                $bString = $attachment[5];3546                if ($bString) {3547                    $string = $attachment[0];3548                } else {3549                    $path = $attachment[0];3550                }3551 3552                $inclhash = hash('sha256', serialize($attachment));3553                if (in_array($inclhash, $incl, true)) {3554                    continue;3555                }3556                $incl[] = $inclhash;3557                $name = $attachment[2];3558                $encoding = $attachment[3];3559                $type = $attachment[4];3560                $disposition = $attachment[6];3561                $cid = $attachment[7];3562                if ('inline' === $disposition && array_key_exists($cid, $cidUniq)) {3563                    continue;3564                }3565                $cidUniq[$cid] = true;3566 3567                $mime[] = sprintf('--%s%s', $boundary, static::$LE);3568                //Only include a filename property if we have one3569                if (!empty($name)) {3570                    $mime[] = sprintf(3571                        'Content-Type: %s; name=%s%s',3572                        $type,3573                        static::quotedString($this->encodeHeader($this->secureHeader($name))),3574                        static::$LE3575                    );3576                } else {3577                    $mime[] = sprintf(3578                        'Content-Type: %s%s',3579                        $type,3580                        static::$LE3581                    );3582                }3583                //RFC1341 part 5 says 7bit is assumed if not specified3584                if (static::ENCODING_7BIT !== $encoding) {3585                    $mime[] = sprintf('Content-Transfer-Encoding: %s%s', $encoding, static::$LE);3586                }3587 3588                //Only set Content-IDs on inline attachments3589                if ((string) $cid !== '' && $disposition === 'inline') {3590                    $mime[] = 'Content-ID: <' . $this->encodeHeader($this->secureHeader($cid)) . '>' . static::$LE;3591                }3592 3593                //Allow for bypassing the Content-Disposition header3594                if (!empty($disposition)) {3595                    $encoded_name = $this->encodeHeader($this->secureHeader($name));3596                    if (!empty($encoded_name)) {3597                        $mime[] = sprintf(3598                            'Content-Disposition: %s; filename=%s%s',3599                            $disposition,3600                            static::quotedString($encoded_name),3601                            static::$LE . static::$LE3602                        );3603                    } else {3604                        $mime[] = sprintf(3605                            'Content-Disposition: %s%s',3606                            $disposition,3607                            static::$LE . static::$LE3608                        );3609                    }3610                } else {