PHP一个发送邮件的类

   $response = str_replace("\r\n", "", fgets($this->sock, 512));


        $this->smtp_debug($response."\n");


     


        if (!ereg("^[23]", $response)) {


            fputs($this->sock, "QUIT\r\n");


            fgets($this->sock, 512);

    
            $this->log_write("Error: Remote host returned \"".$response."\"\n");


            return FALSE;


        }


        return TRUE;


    }


    function smtp_putcmd($cmd, $arg = "")


    {


        if ($arg != "") {


            if($cmd=="") $cmd = $arg;


            else $cmd = $cmd." ".$arg;


        }


        fputs($this->sock, $cmd."\r\n");


        $this->smtp_debug("> ".$cmd."\n");


        return $this->smtp_ok();


    }


    function smtp_error($string)


    {


        $this->log_write("Error: Error occurred while ".$string.".\n");


        return FALSE;


    }


    function log_write($message)


    {


        $this->smtp_debug($message);


        if ($this->log_file == "") {
    

            return TRUE;


        }


        $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;


        if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {


            $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");


            return FALSE;;