SMTP::parseHelloFields( string $type )

874    protected function parseHelloFields($type)875    {876        $this->server_caps = [];877        $lines = explode("\n", $this->helo_rply);878 879        foreach ($lines as $n => $s) {880            //First 4 chars contain response code followed by - or space881            $s = trim(substr($s, 4));882            if (empty($s)) {883                continue;884            }885            $fields = explode(' ', $s);886            if (!empty($fields)) {887                if (!$n) {888                    $name = $type;889                    $fields = $fields[0];890                } else {891                    $name = array_shift($fields);892                    switch ($name) {893                        case 'SIZE':894                            $fields = ($fields ? $fields[0] : 0);895                            break;896                        case 'AUTH':897                            if (!is_array($fields)) {898                                $fields = [];899                            }900                            break;901                        default:902                            $fields = true;903                    }904                }905                $this->server_caps[$name] = $fields;906            }907        }908    }