php如何接收发件箱邮件

php接收邮件举例：
$server = "{bjmail.*.com/pop3}"; //邮件服务器
$mailbox = "inbox"; //收件箱
$mailaccount="zhao**";//用户名
$mailpasswd=" "; //密码
$stream = @imap_open($server.$mailbox,$mailaccount,$mailpasswd);//打开IMAP 连结
$mail_number = imap_num_msg($stream);//信件的个数
if($mail_number < 1) { echo "No Message for $email"; }//如果信件数为0,显示信息

for($i=$mail_number;$i>=$mail_number;$i--)
{
$headers = @imap_header($stream, $i);
$mail_header= imap_headerinfo($stream, $i);//邮件头部
//var_dump ($mail_header);
$subject = $mail_header->subject;//邮件标题
$subject=decode_mime($subject);
echo $subject;

//编码为简体中文的标题的处理方法
// if(stristr($subject, "=?gb2312"))
// { //编码为简体中文的标题
// $subject=substr($subject,11);
// $subject=substr($subject,0,-2);
// $subject = base64_decode($subject);
// }
echo $from = $mail_header->fromaddress;//发件人
echo $date = $mail_header->date;//日期

$body = imap_fetchbody($stream, $i, 1);
$body = imap_base64($body);
$body = nl2br($body);
echo $body;

// $body = imap_qprint($body);
// echo $body;
// $body = imap_binary($body);
// $body = imap_base64($body);
//echo $body;

}
//对mime解码
function decode_mime($string)
{
$pos = strpos($string,'=?');
if (!is_int($pos)) {
return $string;
}
$preceding = substr($string, 0, $pos); // save any preceding text
$search = substr($string, $pos+2); /* 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); //取出字符集的定义部分
$search = substr($search, $d1+1); //字符集定义以后的部分＝>$search;
$d2 = strpos($search, '?');
if (!is_int($d2)) {
return $string;
}
$encoding = substr($search, 0, $d2); ////两个?　之间的部分编码方式　：q　或　b　
$search = substr($search, $d2+1);
$end = strpos($search, '?='); //$d2+1 与 $end 之间是编码了　的内容：=> $endcoded_text;
if (!is_int($end)) {
return $string;
}
$encoded_text = substr($search, 0, $end);
$rest = substr($string, (strlen($preceding . $charset . $encoding . $encoded_text)+6)); //+6 是前面去掉的　=????=　六个字符
switch ($encoding) {
case 'Q':
case 'q':
//$encoded_text = str_replace('_', '％20', $encoded_text);
//$encoded_text = str_replace('=', '％', $encoded_text);
//$decoded = urldecode($encoded_text);
$decoded=quoted_printable_decode($encoded_text);
if (strtolower($charset) == 'windows-1251') {
$decoded = convert_cyr_string($decoded, 'w', 'k');
}
break;
case 'B':
case 'b':
$decoded = base64_decode($encoded_text);
if (strtolower($charset) == 'windows-1251') {
$decoded = convert_cyr_string($decoded, 'w', 'k');
}
break;
default:
$decoded = '=?' . $charset . '?' . $encoding . '?' . $encoded_text . '?=';
break;
}
return $preceding . $decoded .decode_mime($rest);
//return $preceding . $decoded . $this->decode_mime($rest);

}

mail函数有要求的

如果是WIN平台,需要提供不带身份验证的SMTP的服务器地址

如果是LINUX/UNIX平台,需要SENDMAIL程序支持,并定义程序路径!

你网上搜索下,有SMTP MAIL的类库么?
ZEND FRAMEWORK或CODEIGNITER也提供的...
支持SOCKET连接SMTP的方式发送邮件!