PHP Email Topic_PHP Tutorial

PHP email topic PHP SMTP class
/**********************************
PHP MIMESMTP ver 1.0 Powered by Boss_ch, Unigenius soft ware co. Ltd
All rights reserved, Copyright 2000;
This class uses PHP to send MIME type emails through smtp sock operation, and can send
HTML format The text and attachments are encoded in base64
This version is for individual sending. Different from the multi-person version, every time it is sent to a person, it is re-encoded. From the perspective of the user at the receiving end, it is just sent to him. A person's.
For multi-person crowd sending, it is only sent once and sent to different people's mailboxes through multiple RCPTTO commands.
Instructions:
Please set $hostname as the default smtp server that you have permissions or Specify
when new and change $charset to your default character set
If there are pictures in the HTML text, please use absolute path references "httP://host/path/image.gif";
And connect to the Internet to ensure that the program can read the data information of the image
If the Html text is submitted through a form, please use StripSlashes ($html_body) to preprocess the text content first
Used in Html For style sheet files, please do not use references such as . Place the style sheet definition directly in the
tag.

Please retain this copyright information when reprinting. , Bugs Report: [email]boss_ch@china.com[/email]
************************************ ******/
if(!isset($__smtp_class__)){
$__smtp_class__=1;

class smtp
{
var $hostname="";
var $port=25;
var $connection=0;
var $debug=1;

var $timeout=30;
var $err_str;
var $err_no;

var $autocode=true;
var $charset="??????";
var $subject="";
var $body="" ;
var $attach="";
var $temp_text_body;
var $temp_html_body;
var $temp_body_images;

var $bound_begin="=====powered_by_boss_chen_" ;
var $bound_end="_046484063883_=====";

Function smtp($server="smtp.china.com",$port=25,$time_out=20)
{$this->hostname=$server;
$this->port=$port;
$this->timeout=$time_out;
return true;
}

Function outdebug($message)
{
echo htmlspecialchars($message)."
n";
}


function command($command, $return_lenth=1,$return_code='2')
{
if ($this->connection==0)
{
$this->err_str="Not connected to any Server, please check network connection";
return false;
}
if ($this->debug)
$this->outdebug(">>> $command" );
if (!fputs($this->connection,"$command rn"))
{
$this->err_str="Unable to send command".$command;
return false;
}
else
{
$resp=fgets($this->connection,256);
if($this->debug)
$this ->outdebug("$resp");
if (substr($resp,0,$return_lenth)!=$return_code)
{
$this->err_str=$command." command The server returned invalid: ".$resp;
return false;
}
else
return true;
}
}


Function open()
{
if($this->hostname=="")
{$this->err_str="Invalid hostname!!";
return false;
}

if ($this->debug) echo "$this->hostname,$this->port,&$err_no, &$err_str, $this->timeout
";
if (!$this->connection=fsockopen($this->hostname,$this->port,&$err_no, &$err_str, $this->timeout))
{
$this->err_str="Failed to connect to SMTP server, error message: ".$err_str."Error number: ".$err_no;
return false;
}
else
{
$resp=fgets($this->connection,256);
if($this->debug)
$this->outdebug("$resp");
if (substr($resp,0,1)!="2")
{$this->err_str="The server returned invalid information: ".$resp." Please check whether the SMTP server is correct";
return false;
}
return true;
}
}


Function Close()
{
if($this-> connection!=0)
{
fclose($this->connection);
$this->connection=0;
}
}

Function Buildhead ($from_name,$to_name,$from_mail,$to_mail,$subject)
{
if (empty($from_name))
$from_name=$from_mail;
if (empty($to_name) ) $to_name=$to_mail;
$this->subject="From: =?$this->charset?B?".base64_encode($from_name)."?=<$from_mail>rn";
$this->subject.="To: =?$this->charset?B?".base64_encode($to_name)."?=<$to_mail>rn";
$subject= ereg_replace("n","",$subject);
$this->subject.="Subject: =?$this->charset?B?".base64_encode($subject)."?=rn ";
if ($this->debug) echo nl2br(htmlspecialchars($this->subject));
return true;
}


Function parse_html_body($html_body=null)
{
$passed="";
$image_count=0;
$this->temp_body_images=array();
while (eregi("<*img([^>]+)src[[:space:]]*=[[:space:]]*([^ ]+)",$html_body,$reg))
{

$pos=@strpos($html_body,$reg[0]);
$passed.=substr($html_body,0,$pos);
$html_body=substr($html_body,$pos+strlen($reg[0]));
$image_tag=$reg[2];
$image_att=$reg[1];
$tag_len=strlen($image_tag);
if ($image_tag[0]=="'" or $image_tag[0]=='"')
$image_tag=substr($image_tag,1);
if (substr($image_tag,strlen($imgage_tag)-1,1)=="'" or substr($image_tag,strlen($imgage_tag)-1,1)=='"')
$image_tag=substr($image_tag,0,strlen($imgage_tag)-1);
//echo $image_tag."
";
$cid=md5(uniqid(rand()));
$cid=substr($cid,0,15)."@unigenius.com";
$passed.="$end_pos=@strpos($html_body,'>');
$passed.=substr($html_body,0,$end_pos);
$html_body=substr($html_body,$end_pos);
// 把图片数据读出来保存到一个数据；

$img_file_con=fopen($image_tag,"r");
unset($image_data);
while ($tem_buffer=AddSlashes(fread($img_file_con,16777216)))
$image_data.=$tem_buffer;
fclose($img_file_con);
$image_exe_name=substr($image_tag,strrpos($image_tag,'.')+1,3);
switch (strtolower($image_exe_name))
{
case "jpg":
case "jpeg":
$content_type="image/jpeg";
break;
case "gif":
$content_type="image/gif";
break;
case "png":
$content_type="image/x-png";
break;
case "tif":
$content_type="image/tif";
break;
default:
$content_type="image/";
break;
}

$this->temp_body_images[$image_count][name]=basename($image_tag);
$this->temp_body_images[$image_count][type]=$content_type;
$this->temp_body_images[$image_count][cid]=$cid;
$this->temp_body_images[$image_count][data]=$image_data;
$image_count++;
}
$this->temp_html_body=$passed.$html_body;
return true;

}

function build_content($bound_level=0,$text_body,$html_body,$hava_att=false)
{
if ($html_body)
{
if (eregi("<*img[[:space:]]+src[[:space:]]*=[[:space:]]*([^ ]+)",$html_body,$reg))
{
$bound_level++;
if ($text_body)
{
$this->body.="Content-Type: multipart/related;
type="multipart/alternative";
tboundary="";
$this->body.=$this->bound_begin.$bound_level.$this->bound_end.""rnrn";
}
else
{
$this->body.="Content-Type: multipart/related;
tboundary="";
$this->body.=$this->bound_begin.$bound_level.$this->bound_end.""rnrn";

}// 对于是否 text 正文 、 html正文 有没有，须有不同的 MIME 头
if (!$hava_att) $this->body.="This is a multi-part message in MIME format.rnrn";
// 正文标识，如果是已经有附件的编码，则在正文 中不需要这一句
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->parse_html_body($html_body);
if ($text_body)
{
$this->body.="Content-Type: multipart/alternative;
tboundary="";
$bound_level++;
$this->body.=$this->bound_begin.$bound_level.$this->bound_end.""rnrn";
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->body.="Content-Type: text/plain;rn";
$this->body.="tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($text_body)))."rn";
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->body.="Content-Type: text/html;rn";
$this->body.="tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($this->temp_html_body)))."rn";
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."--rnrn";
$bound_level--;
}
else
{
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->body.="Content-Type: text/html;rn";
$this->body.="tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($this->temp_html_body)))."rn";
}//正文编码，有或没有text 部分，编成不同的格式。
for ($i=0;$itemp_body_images);$i++)
{
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->body.="Content-Type:".$this->temp_body_images[$i][type].";
name="";
$this->body.=$this->temp_body_images[$i][name].""rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="Content-ID: <".$this->temp_body_images[$i][cid].">rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($this->temp_body_images[$i][data])))."rn";
}
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."--rnrn";
$bound_level--;
}
else // 有或没有图片，以上是有图片的处理，下面是没有图片的处理
{
$this->temp_html_body=$html_body;
if ($text_body)
{
$bound_level++;
$this->body.="Content-Type: multipart/alternative;
tboundary="";
$this->body.=$this->bound_begin.$bound_level.$this->bound_end.""rnrn";

if (!$hava_att) $this->body.="rnThis is a multi-part message in MIME format.rnrn";
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->body.="Content-Type: text/plain;rn";
$this->body.="tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($text_body)))."rn";
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->body.="Content-Type: text/html;rn";
$this->body.="tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($this->temp_html_body)))."rn";
$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."--rnrn";
$bound_level--;
}
else
{
$this->body.="Content-Type: text/html;rn";
$this->body.="tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body.="rn".chunk_split(base64_encode(StripSlashes($this->temp_html_body)))."rn";
}//正文编码，有或没有text 部分，编成不同的格式。

}// end else
}
else // If there is no html body, there is only text body
{
$this->body.="Content-Type: text /plain;
tcharset="$this->charset"rn";
$this->body.="Content-Transfer-Encoding: base64rn";
$this->body. ="rn".chunk_split(base64_encode(StripSlashes($text_body)))."rn";
}
}// end function default


Function Buildbody($text_body=null ,$html_body=null,$att=null)
{
$this->body="MIME-Version: 1.0rn";
if (null==$att or (@count($ att)==0)) //If there is no attachment, check the type of text;
{
$encode_level=0;
$this->build_content($encode_level,$text_body,$html_body);
}// If there is no attachment,
// *********************************** *********************
else //If there is an attachment,
{
$bound_level=0;
$this-> ;body.="Content-Type: multipart/mixed;
tboundary="";
$bound_level++;

$this->body.=$this->bound_begin.$bound_level .$this->bound_end.""rnrn";
$this->body.="This is a multi-part message in MIME format.rnrn";
$this->body.= "--".$this->bound_begin.$bound_level.$this->bound_end."rn";
$this->build_content($bound_level,$text_body,$html_body,true);// Incorporate into the text part

$num=count($att);
for ($i=0;$i<$num;$i++)
{
$file_name=$att [$i][name];
$file_source=$att[$i][source];
$file_type=$att[$i][type];
$file_size=$att[$ i][size];

if (file_exists($file_source))
{
$file_data=addslashes(fread($fp=fopen($file_source,"r"), filesize($ file_source)));
$file_data=chunk_split(base64_encode(StripSlashes($file_data))));
$this->body.="--".$this->bound_begin.$bound_level.$ this->bound_end."rn";
$this->body.="Content-Type: $file_type;rntname="$file_name"rnContent-Transfer-Encoding: base64rn";
$this- >body.="Content-Disposition: attachment;rntfilename="$file_name"rnrn";
$this->body.=$file_data."rn";
}
}//end for

$this->body.="--".$this->bound_begin.$bound_level.$this->bound_end."--rnrn";
}// end else

if ($this->debug) echo nl2br(htmlspecialchars($this->body));

return true;
}


function send($from_name,$to_name,$from_mail,$to_mail,$subject,$text_body=false,$html_body=false,$att=false)
{

if (empty($ from_mail) or empty($to_mail))
{
$this->err_str="The correct email address was not specified: Sender: ".$from_mail." Receiver: ".$to_mail;
return false;
}

if (gettype($to_mail)!="array")
$to_mail=split(",",$to_mail);//If not an array, convert into an array, even if there is only one sending object;
if (gettype($to_name)!="array")
$to_name=split(",",$to_name);//If it is not an array, convert it to an array , even if there is only one sending object;

$this->Buildbody($text_body,$html_body,$att);
// The content of all letters is the same and can be edited only once, but for Different recipients require different Head


if (!$this->open()) return false;
if (!$this->command("HELO $this ->hostname",3,"250")) return false;
//Establish a link with the server
if (!$this->open()) return false;
if (!$ this->command("HELO $this->hostname",3,"250")) return false;

for ($i=0;$i{
$this->Buildhead($from_name,$to_name[$i],$from_mail,$to_mail[$i],$subject);
if (!$this-> command("RSET",3,"250")) return false;
if (!$this->command("MAIL FROM:".$from_mail,3,"250")) return false;
if (!$this->command("RCPT TO:".$to_mail[$i],3,"250")) return false;
if (!$this->command("DATA" ,3,"354")) return false;
// Prepare to send email
if ($this->debug) $this->outdebug("sending subject;");
if ( !fputs($this->connection,$this->subject)) {$this->err_str="Error sending headers! ";return false;}
if ($this->debug) $this->outdebug("sending body;");
if (!fputs($this->connection,$this- >body)) {$this->err_str="Error sending body! ";return false;}
if (!fputs($this->connection,".rn")) {$this->err_str="Error sending text! ";return false;}//The text is sent, exit;
$resp=fgets($this->connection,256);
if($this->debug)
$this- >outdebug("$resp");
if (substr($resp,0,1)!="2")
{
$this->err_str="After sending, the server No response! !";
return false;
}
// 发送邮件
}
if (!$this->command("QUIT",3,"221")) return false;
$this->close();
return true;
}

}//end class define
}//end if(!isset($__smtp_class__))
?>


PHP SMTP类使用方法   
include("smtp.php");

$mail = new smtp("localhost");

$mail->debug = 0;

$sender_name = "root";
$sender_mail = "root@localhost";
$to_name = "mm";
$to_mail = "[email]mm@your.com[/email]";
$subject = "i miss u";
$content = "i miss u much.";
$att[0]["name"] = "miss.jpg";
$att[0]["source"] = "/path/to/your/miss.jpg";
$att[0]["type"] = "image/jpeg";
$att[0]["size"] = "10kb";
$extra_subject = "To:".$to_mail." 主题:".$subject;

if (!$mail->send($sender_name,$to_name,$sender_mail,$to_mail,$extra_subject,$content,false,$att))
$err = 1;
?>




返回文件的MIME类型的函数guessMIMEType()   
function guessMIMEType($filename) {
//GUESS MIME TYPE
$filename = basename($filename);
if(strrchr($filename,".") == false) {
return("application/octet-stream");
}

$ext = strrchr($filename,".");
switch($ext) {
case ".gif":
return "image/gif";
break;
case ".gz":
return "application/x-gzip";
case ".htm":
case ".html":
return "text/html";
break;
case ".jpg":
return "image/jpeg";
break;
case ".tar":
return "application/x-tar";
break;
case ".txt":
return "text/plain";
break;
case ".zip":
return "application/zip";
break;
default:
return "application/octet-stream";
break;
}
}


检测Email地址的函数IsValidEmail()   
function IsValidEmail($Email) {
if(!ereg("^[[:alnum:]_.]+@([[:alnum:]_]+.)+[[:alnum:]][[:alnum:]][[:alnum:]]?$",$Email, $regs)){
$IsValidEmail = false;
}
else
{
$IsValidEmail = true;
}
return $IsValidEmail;
}




一个MIME MAIL类，请大家注意如何构造一个邮件体   
class mime_mail
{
var $parts;
var $to;
var $from;
var $headers;
var $subject;
var $body;

/*
* void mime_mail()
* class constructor
*/
function mime_mail()
{
$this->parts = array();
$this->to = "";
$this->from = "";
$this->subject = "";
$this->body = "";
$this->headers = "";
}

/*
* void add_attachment(string message, [string name], [string ctype])
* Add an attachment to the mail object
*/
function add_attachment($message, $name = "", $ctype = "application/octet-stream")
{
$this->parts[] = array (
"ctype" => $ctype,
"message" => $message,
"encode" => $encode,
"name" => $name
);
}

/*
* void build_message(array part=
* Build message parts of an multipart mail
*/
function build_message($part)
{
$message = $part["message"];
$message = chunk_split(base64_encode($message));
$encoding = "base64";
return "Content-Type: ".$part["ctype"].
($part["name"]?";ntname="".$part["name"].""" : "").
"nContent-Transfer-Encoding: $encoding".
"nContent-Disposition: attachment".
($part["name"]?";ntfilename="".$part["name"].""" : "").
"nn$messagen";
}

/*
* void build_multipart()
* Build a multipart mail
*/
function build_multipart()
{
$boundary = "b".md5(uniqid(time()));
$multipart = "Content-Type: multipart/mixed;ntboundary="$boundary"nnThis is a MIME encoded message.nn--$boundary";

for($i = sizeof($this->parts)-1; $i >= 0; $i--)
{
$multipart .= "n".$this->build_message($this->parts[$i])."--$boundary";
}
return $multipart.= "--n";
}

/*
* void send()
* Send the mail (last class-function to be called)
*/
function send()
{
$addtionheaders = "";
if (!empty($this->from))
$addtionheaders .= "From: ".$this->from."n";
if (!empty($this->headers))
$addtionheaders .= $this->headers."n";

if (!empty($this->body))
$this->add_attachment($this->body, "", "text/plain");

$addtionheaders .= "MIME-Version: 1.0n".$this->build_multipart();

$fp = fopen("mail.txt","w");
fputs($fp,$addtionheaders);
fclose($fp);
mail($this->to, $this->subject, "", $addtionheaders);
}
}; // end of class

/*
* Example usage
*

$attachment = fread(fopen("test.jpg", "r"), filesize("test.jpg"));

$mail = new mime_mail();
$mail->from = "[email]foo@bar.com[/email]";
$mail->headers = "Errors-To: [email]foo@bar.com[/email]";
$mail->to = "[email]bar@foo.com[/email]";
$mail->subject = "Testing...";
$mail->body = "This is just a test.";
$mail->add_attachment("$attachment", "test.jpg", "image/jpeg");
$mail->send();

*/
?>


myimap类，读取邮件   
//////////////////////////////////////////////
//Origin by Alpha.Z (5/21/2000)
//Modified By Belltree <[email]belltree@163.com[/email]> (11/01/2000)
///////////////////////////////////////////////
class myimap
{
var $username="";
var $userpwd="";
var $hostname="";
var $port=0;
var $connection=0; //是否连接
var $state="DISCONNECTED"; //连接状态
var $greeting="";
var $must_update=0;
var $inStream=0;
var $num_msg_parts = 0;
var $attach;
var $num_of_attach = 0;

function open()
{
if ($this->port==110)
$this->inStream=imap_open("{".$this->hostname."/pop3:110}inbox",$this->username,$this->userpwd);
else
$this->inStream=imap_open("{".$this->hostname.":143}INBOX",$this->username,$this->userpwd);

if ($this->inStream)
{
//echo "用户：$this->username 的信箱连接成功。
";
return $inStream;
}
else
{
echo "用户：$this->username 的信箱连接失败。
";
return 0;
}
}

Function close()
{
if(imap_close($this->inStream))
{
//echo "

---

已经与服务器 $this->hostname 断开连接。";
return 1;
}
else
{
//echo "

---

与服务器 $this->hostname 断开连接失败。";
return 0;
}
}

function DeleteMail($msg_no){
if (@imap_delete($this->inStream,$msg_no))
return true;
else
return false;
}

function ExpungeMail(){
if (@imap_expunge($this->inStream))
return true;
else
return false;
}


function CheckMailbox($page_size,$page)
{
$mboxinfo=@imap_mailboxmsginfo($this->inStream);
//$mboxinfo=imap_check($this->inStream);
if ($mboxinfo)
if ($mboxinfo->Nmsgs>0)
{
//echo "您邮箱：".$mboxinfo->Mailbox."
";
echo $this->username."@wells.com的收件箱里共有邮件数：".$mboxinfo->Nmsgs."
n";
echo "未读邮件数：".$mboxinfo->Unread."";
echo "新邮件数：".$mboxinfo->Recent." ";
echo "总共占用空间：".$mboxinfo->Size."字节
n";
$last_page = ceil($mboxinfo->Nmsgs/$page_size);
$cur_page = $page +1;
$num_page = $last_page;
echo "第".$cur_page."页，共".$last_page."页。n";
}
else
{
echo "您的信箱里没有邮件。

---

n";
}
else
{
echo '错误：无法获取收件箱的信息。';
return 0;
}
echo "n";
echo "n";
$sortby="SORTDATE";
$sort_reverse=1;
$sorted = imap_sort($this->inStream, $sortby, $sort_reverse, SE_UID);

for ($i=0;$i<$mboxinfo->Nmsgs;$i++)
{
if (($i>=$page*$page_size) and ($i<$page*$page_size+$page_size)){
$msg_no = @imap_msgno($this->inStream, $sorted[$i]);
$msgHeader = @imap_header($this->inStream, $msg_no);
//日期

if (isset($msgHeader->date))
{
$date = $msgHeader->date;

if (ord($date) > 64)
$date = substr($date, 5);

$datepart = split(" ",$date);
$date = $datepart[0]." ".$datepart[1]." ".$datepart[2]." ".$datepart[3];
/*
while (strstr(' ', $date))
{
$date = str_replace(' ', ' ', $date);
}
*/
}

if (isset($msgHeader->from[0]))
{
$from = $msgHeader->from[0];
if (isset($from->personal))
{
$frm = trim($this->decode_mime_string($from->personal));
if (isset($from->mailbox) && isset($from->host))
{
$frm_add = $from->mailbox . '@' . $from->host;
}
}
else
if (isset($from->mailbox) && isset($from->host))
{
$frm = $from->mailbox . '@' . $from->host;
}
else
if (isset($msgHeader->fromaddress))
$frm = trim($h->fromaddress);
}
else
if (isset($msgHeader->fromaddress))
$frm = trim($msgHeader->fromaddress);

if (isset($msgHeader->toaddress))
$to = trim($msgHeader->toaddress);
else
$to = "未知";


if (isset($msgHeader->subject))
$sub = trim($this->decode_mime_string($msgHeader->subject));
if ($sub == "")
$sub = "无主题";
if (isset($msgHeader->Size))
$msg_size = ($msgHeader->Size > 1024) ? sprintf("%.0f kb", $msgHeader->Size / 1024) : $msgHeader->Size;
//if (strlen($frm) > 50)
// $frm = substr($frm, 0, 50) . '...';
if (strlen($sub) > 50)
$sub = substr($sub, 0, 50) . '...';
if ($msgHeader->Unseen == "U")
$newmail = "未读";
else
$newmail = "已读";
echo "n";
echo "n";
echo '';
echo "n";
}}
echo "

状态		发件人	主题	时间	大小
$newmail		'.$frm.'	'.$sub.'	'.$date.'	'.$msg_size.'

n";
echo "n";
if ($page == 0)
echo "n";
else
echo "n";
if (($prev_page = $page-1) < 0)
echo "n";
else
echo "n";

if (($next_page = $page + 1) >= $last_page)
echo "n";
else
echo "n";
$last_page --;
if ( $last_page < $next_page)
echo "n";
else
echo "n";
echo "

第一页

第一页

前一页

前一页

后一页

后一页

最末页

最末页

n";
}

function decode_mime_string ($string)
{
$pos = strpos($string, '=?');
if (!is_int($pos))
{
return $string;
}

$preceding = substr($string, 0, $pos); // save any preceding text

$search = substr($string, $pos+2, 75); // the mime header spec says this is the longest a single encoded word can be
$d1 = strpos($search, '?');
if (!is_int($d1))
{
return $string;
}

$charset = substr($string, $pos+2, $d1);
$search = substr($search, $d1+1);

$d2 = strpos($search, '?');
if (!is_int($d2))
{
return $string;
}

$encoding = substr($search, 0, $d2);
$search = substr($search, $d2+1);

$end = strpos($search, '?=');
if (!is_int($end))
{
return $string;
}

$encoded_text = substr($search, 0, $end);
$rest = substr($string, (strlen($preceding . $charset . $encoding . $encoded_text)+6));

switch ($encoding)
{
case 'Q':
case 'q':
$encoded_text = str_replace('_', '%20', $encoded_text);
$encoded_text = str_replace('=', '%', $encoded_text);
$decoded = urldecode($encoded_text);
break;

case 'B':
case 'b':
$decoded = urldecode(base64_decode($encoded_text));
break;

default:
$decoded = '=?' . $charset . '?' . $encoding . '?' . $encoded_text . '?=';
break;
}

return $preceding . $decoded . $this->decode_mime_string($rest);
}


Function display_toaddress ($user, $server, $from)
{
return is_int(strpos($from, $this->get_barefrom($user, $server)));
}

Function get_barefrom($user, $server)
{
$barefrom = "$user@$real_server";

return $barefrom;
}

Function get_structure($msg_num)
{
$structure=imap_fetchstructure($this->inStream,$msg_num);
//echo gettype($structure);
return $structure;
}


Function proc_structure($msg_part, $part_no, $msg_num)
{
if ($msg_part->ifdisposition)
{
// See if it has a disposition, The only thing I know of that this, would be used for would be an attachment
// Lets check anyway
if ($msg_part->disposition == "attachment")
{
$att_name = "unknown";
for ($lcv = 0; $lcv < count($msg_part->parameters); $lcv++)
{
$param = $msg_part->parameters[$lcv];

if ($param->attribute == "name")
{
$att_name = $param->value;
break;
}
}

$att_name = $this->decode_mime_string($att_name);

$att_path = $this->username."\".$att_name;

$this->attach[$this->num_of_attach]=$att_name; //登记附件列表
$this->num_of_attach ++; //登记附件数量
/*
$att_path = $this->username."\".$this->decode_mime_string($att_name);
if ($this->attach=="")
$this->attach = $att_name;
else
$this->attach .= ";".$att_name;
*/
if (!is_dir($this->username))
mkdir($this->username,0700);
$fp=fopen($att_path,"w");
switch ($msg_part->encoding)
{
case 3: // base64
fputs($fp,imap_base64(imap_fetchbody($this->inStream,$msg_num,$part_no)));
break;
case 4: // QP
fputs($fp,imap_qprint(imap_fetchbody($this->inStream,$msg_num,$part_no)));
break;
default:
fputs($fp,imap_fetchbody($this->inStream,$msg_num,$part_no));
break;
}
fclose($fp);

//if ($msg_part->type=="5"){
// echo "

---

n";
// echo "

n";
//}
} // END IF ATTACHMENT
else //NOT ifdisposition
{
// I guess it is used for something besides attachments????
}
}
else
{
// Not an attachment, lets see what this part is...
switch ($msg_part->type)
{
case 0:
$mime_type = "text";
break;
case 1:
$mime_type = "multipart";
// Hey, why not use this function to deal with all the parts
// of this multipart part
$this->num_msg_parts = count($msg_part->parts);
for ($i = 0; $i < $this->num_msg_parts; $i++)
{
if ($part_no != "")
{
$part_no = $part_no.".";
}
for ($i = 0; $i < count($msg_part->parts); $i++)
{
$this->proc_structure($msg_part->parts[$i], $part_no.($i + 1), $msg_num);
}
}
break;
case 2:
$mime_type = "message";
break;
case 3:
$mime_type = "application";
break;
case 4:
$mime_type = "audio";
break;
case 5:
$mime_type = "image";
break;
case 6:
$mime_type = "video";
break;
case 7:
$mime_type = "model";
break;
default:
$mime_type = "unknown";
// hmmm....
}

$full_mime_type = $mime_type."/".$msg_part->subtype;
$full_mime_type = strtolower($full_mime_type);


// Decide what you what to do with this part
// If you want to show it, figure out the encoding and echo away

switch ($msg_part->encoding)
{

case 0:
case 1:
if ($this->num_msg_parts == 0){
echo ereg_replace("rn","
rn",imap_body($this->inStream,$msg_num));

}
else{
if ($part_no!=""){
echo ereg_replace("rn","
rn",imap_fetchbody($this->inStream,$msg_num,$part_no));

}
}
break;
case 3: //BASE64

if ($full_mime_type=="text/plain"){

if ($this->num_msg_parts == 0){
$content=imap_base64(imap_body($this->inStream,$msg_num));
}
else{
$content = imap_base64(imap_fetchbody($this->inStream,$msg_num,$part_no));
$att_path = $this->username . "\文本内容.txt";
$fp = fopen($att_path,"w");
fputs($fp,$content);
fclose($fp);
$this->attach[$this->num_of_attach]="文本内容.txt";
$this->num_of_attach++;
}

echo $content;

}

if ($full_mime_type=="text/html"){
$att_path = $this->username . "\超文本内容.htm";
$fp = fopen($att_path,"w");
fputs($fp,imap_base64(imap_fetchbody($this->inStream,$msg_num,$part_no)));
fclose($fp);
$this->attach[$this->num_of_attach]="超文本内容.htm";
$this->num_of_attach++;
}
break;
case 4: //QPRINT
// use imap_qprint to decode
if ($this->num_msg_parts == 0){
echo ereg_replace("n","
",imap_qprint(imap_body($this->inStream,$msg_num)));

}
else{
echo ereg_replace("n","
",imap_qprint(imap_fetchbody($this->inStream,$msg_num,$part_no)));

}
if ($full_mime_type=="text/html"){
$att_path = $this->username . "\qp超文本内容.htm";
$fp = fopen($att_path,"w");
fputs($fp,imap_base64(imap_fetchbody($this->inStream,$msg_num,$part_no)));
fclose($fp);
$this->attach[$this->num_of_attach]="qp超文本内容.htm";
$this->num_of_attach++;
}
break;
case 5:
// not sure if this needs decoding at all
echo ereg_replace("n","
",imap_fetchbody($this->inStream,$msg_num));
break;
default:
//echo ereg_replace("n","
",imap_fetchbody($this->inStream,$msg_num,$part_no));
break;
}

}
}


};

?>


myimap的扩展类，及读取一封邮件的例子(mail_read.php)   
require("myimap.php");

class myimap_ext extends myimap {

function get_mail_subject($msg_no){
$msgHeader = @imap_header($this->inStream, $msg_no);
if (isset($msgHeader->subject))
$sub = trim($this->decode_mime_string($msgHeader->subject));
if ($sub == "")
$sub = "无主题";
return "Fw:".$sub;
}
function print_attaches(){
for ($i=0;$iattach);$i++){
echo "username."\".$this->attach[$i]."">".$this->attach[$i]."
";
}
}
function list_attaches(){
for ($i=0;$iattach);$i++){
if ($i==0)
$attaches = $this->attach[$i];
else
$attaches .= ";".$this->attach[$i];
}
return $attaches;
}
}

$imap=new myimap_ext;
$imap->hostname="localhost";
$imap->port=143;
$imap->username="name";
$imap->userpwd="password";

$imap->open();

$mail_structure=$imap->get_structure($msg);
$imap->proc_structure($mail_structure,"",$msg);
if ($imap->num_of_attach > 0){
$imap->print_attaches();
}
@$imap->close();
?>


myimap的例子(mail_list.php)   
require("myimap.php");

$imap=new myimap;
$imap->hostname="localhost";
$imap->port=143;
$imap->username="name";
$imap->userpwd="password";

$imap->open();
if ($page=="") $page=0;
$imap->CheckMailBox(10,$page);
@$imap->close();
?>


如何发送附件（转）   
我经常听到这样一个问题："我有一个从网站发来的合同。我如何给通过表单发送的电子邮件增加一个附件呢？"
首先我要说的是要做到这个没有什么简单的办法。你要很好的理解PHP或
其它的服务器端的脚本语言。当然你还要一个真正支持PHP的网站的账号。如果满足了这个前提，在你读完了本章后就可以用PHP发送带附件的电子邮件了。

1. 附件是如何工作的

如果你曾经在PHP的手册中搜索过"附件"函数，那么结果可能是什么都没有（至少在我写本文的时间还没有）。后来你就要花很多时间来了解这方面的知识。

你也许会想当你给某个人发送一封带附件的电子邮件时，附件是和邮件一起放到收件人的信箱里的（比如，如果你给他/她发了一个PNG的图片文件，他/她的信箱里会包含一个txt文件（电子邮件）和一个.png文件（附件））。但这不是它的工作原理。当你加入一个附件时，你的邮件程序把附件转换成纯文本文件，并在你写的内容（实际的电子邮件）后面插入这个文本块。这个，当你把所有的东西发出来后，收件人的信箱里只有一个纯文本文件--一个同时包含附件和实际电子邮件内容的文件。

Below is an example of an email with an attachment (an HTML file). I have marked some important lines:

Return-Path: <[email]someone@example.com[/email]>
Date: Mon, 22 May 2000 19:17: 29 +0000
From: Someone <[email]someone@example.com[/email]>
To: Person <[email]person@eksempel.dk[/email]>
Message-id: <[email]83729KI93LI9214@example.com[/email]>
Content-type: multipart/mixed; boundary="396d983d6b89a"
Subject: Here's the subject

--396d983d6b89a
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 8bit

This is the body of the email.

--396d983d6b89a
Content-type: text/html; name=attachment.html
Content-disposition: inline; filename=attachment.html
Content-transfer-encoding: 8bit

This is the attached HTML file

--396d983d6b89a--



The first 7 lines are The header of the email, of which it is worth noting the Content-type header part. This header tells the mail program that the email consists of more than one part. An email without attachments has only one part: the message itself. Emails with attachments usually consist of at least two parts: the message and the attachment. In this way, a message with two attachments consists of three parts: the message, the first attachment, and the second attachment.

Emails with attachments are separated by dividing lines between different parts. The dividing line is defined in the Content-type header. Each new section of the message begins with two hyphens (--) and a delimiter. There are also two hyphens after the last dividing line, indicating that there are no other parts of the email.

After each delimiter there are lines that tell the mail program the type of content in this section. For example, take a look at the two lines after the first dividing line in the example above - the lines starting with Content-type: text/plain. What follows these lines is plain text for the ISO-8859-1 character set. The line following the second delimiter tells the mail program that the current section is an HTML file and its name is "attachment.html".

Content-disposition tells the email program to display attachments inline if possible. The new email program now displays HTML content after the message. If Content-disposition is set to attachment, the mail program will not display the contents of the HTML file, but will display an icon (or something similar) connected to the file. To see the content of the attachment, the recipient must click this icon. Under normal circumstances, if the attachment is some text (including HTML), Content-disposition will be set to inline. This is because most email programs can directly display the content of the attachment (text) without using other browsers. If the attachment is not text (such as a picture or other similar content), Content-disposition is set to attachment.

2. Use PHP to generate emails with attachments

Here is an example of how to add a defined HTML file as an attachment to an email:

< ?php
# We first write the actual message content
$emailBody = "This is text that goes into the body of the email.";

# Then we want to attach the HTML file
$attachment = "




< ;h2>This is the attached HTML file

";

# Creates a dividing line that separates different parts of the email.
# Basically, the dividing line can be any string.
# But the important point is to identify the person who wrote the email.
# This will write a random string, so we use the
# uniqid function to generate a random string.
$boundary = uniqid( "");

# Now we need to create the email header. Don’t forget to insert the
# Content-type header to indicate that this email contains one or more attachments.
$headers = "From: [email]someone@example.com[/email]
Content-type: multipart/mixed; boundary="$boundary"";

# OK, now We already have all the contents of the email.
# The next thing to do is modify the body of the email.
$emailBody = "--$boundary
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 8bit

$emailBody

--$boundary
Content-type: text/html; name=attachment.html
Content-disposition: inline; filename=attachment.html
Content-transfer-encoding: 8bit

$attachment

--$boundary--";

# Now you can send the email
mail( "[email]person@eksempel.dk[/email ]", "The subject", $emailBody, $headers);
?>



3. Attach files uploaded by users as attachments

You might You may find the above example difficult to understand, but below...In the example below things are even harder because we are using a form to let users upload their file and attaching the file to the email we are sending. The trouble is that we don't know the MIME type of the file in advance. In the previous example, we already knew that it was an HTML file, so setting the Content-type header for this attachment was simple. In the example below, the MIME type could be arbitrary, since the user might upload an HTML file, a PNG file, a vCard file, or something else. Let's look at an example:

# Now let's generate the form. When generating a form that can upload files,
# Don’t forget to set the "enctype" attribute of the

tag to "multipart/form-data".
echo "n";
echo "
n";
echo "
n";
echo "
n" ;
echo "
n";
echo "< br>n";
echo "n";
echo "

n";

# If the user has pressed the "Send" button"
if ($send) {
# Define the boundary
$boundary = uniqid( "");

# Generate email Header
$headers = "From: $from
Content-type: multipart/mixed; boundary="$boundary"";

# Determine the MIME type of the uploaded file
if ($ attachment_type) $mimeType = $attachment_type;
# If the browser does not specify the MIME type of the file,
# we can set it to "application/unknown".
else $mimeType = "application/unknown" ;

# Determine the name of the file
$fileName = $attachment_name;

# Open the file
$fp = fopen($attachment, "r");
# Read the entire file into a variable
$read = fread($fp, filesize($attachment));

# Okay, now the variable $read saves the text block containing the entire file content.
# Now we need to convert this text block into a format that the mail program can read
# We use the base64 method to encode it
$read = base64_encode($read);

# Now we have a long string encoded using base64 method.
# The next thing is to chop this long string into smaller chunks consisting of 76 characters per line
$read = chunk_split($read);

# Now we can build The body of the email
$body = "--$boundary
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 8bit

$body

--$boundary
Content-type: $mimeType; name=$fileName
Content-disposition: attachment; filename=$fileName
Content-transfer-encoding: base64

$read

--$boundary--";

# Send email
mail($to, $subject, $body, $headers);
}
?>


That’s all. If you don't understand the above example well, my suggestion is to send yourself a few emails with attachments and then carefully study the source code of the emails.

http://www.bkjia.com/PHPjc/314797.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/314797.htmlTechArticlePHP Mail Special PHP SMTP Class? /****************** ******************* PHP MIMESMTP ver 1.0 Powered by Boss_ch, Unigenius soft ware co. Ltd All rights reserved, Copyright 2000; This category uses...