php 發送html郵件函數

<?
/*
此函數可以發送郵件,只不過會返回AUTHENTIFICATION error : 502 Error: command not implemented
這個訊息,目前未知錯誤在那.
*/
function send_mail($to, $subject = 'No subject', $body,$smtp_acc,$smtp_pass,$smtp_host,$from) {
$loc_host = "localhost"; //發信電腦名稱，可隨意
//$smtp_acc = "info@zealotsun.com"; //Smtp認證的使用者名稱，類似fish1240@fishcat.com.cn，或者fish1240
//$smtp_pass="zoezhu188"; //Smtp認證的密碼，一般等同pop3密碼
//$smtp_host="mail.zealotsun.com"; //SMTP伺服器位址，類似 smtp.tom.com
//$from="info@zealotsun.com"; //發信人Email地址，你的發信信箱地址
$headers = "Content-Type: text/html; charset=/"gb2312/"/r/nContent-Transfer-Encoding: base64";
$lb="/r/n"; //linebreak

$hdr = explode($lb,$headers); //解析後的hdr
if($body) {$bdy = preg_replace("/^/./","..",explode($lb,$body));}//解析後的Body

$smtp = array(
//1、EHLO，期待返回220或者250
array("EHLO ".$loc_host.$lb,"220,250","HELO error: "),
//2、發送Auth Login，期待返回334
array("AUTH LOGIN".$lb,"334","AUTH error:"),
//3、發送經過Base64編碼的使用者名稱，期待返回334
array($smtp_acc.$lb,"334","AUTHENTIFICATION error : "),
//4、發送經過Base64編碼的密碼，期待返回235
array($smtp_pass.$lb,"235","AUTHENTIFICATION error : "));
//5、發送Mail From，期待返回250
$smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: ");
//6、發送Rcpt To。期待返回250
$smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: ");
//7、發送DATA，期待返回354
$smtp[] = array("DATA".$lb,"354","DATA error: ");
//8.0、發送From
$smtp[] = array("From: ".$from.$lb,"","");
//8.2、發送To
$smtp[] = array("To: ".$to.$lb,"","");
//8.1、發送標題
$smtp[] = array("Subject: ".$subject.$lb,"","");
//8.3、發送其他Header內容
foreach($hdr as $h) {$smtp[] = array($h.$lb,"","");}
//8.4、發送一個空行，結束Header發送
$smtp[] = array($lb,"","");
//8.5、發送信件主體
if($bdy) {foreach($bdy as $b) {$smtp[] = array(base64_encode($b.$lb).$lb,"","");}}
//9、發送“.”表示信件結束，期待返回250
$smtp[] = array(".".$lb,"250","DATA(end)error: ");
//10、發送Quit，退出，期待返回221
$smtp[] = array("QUIT".$lb,"221","QUIT error: ");

//開啟smtp伺服器連接埠
$fp = @fsockopen($smtp_host, 25);
if (!$fp) echo "<b>Error:</b> Cannot conect to ".$smtp_host."<br>";
while($result = @fgets($fp, 1024)){if(substr($result,3,1) == " ") { break; }}

$result_str="";
//發送smtp數組中的命令/資料
foreach($smtp as $req){
//發送資訊
@fputs($fp, $req[0]);
//print $req[0];
//如果需要接收伺服器返回資訊，則
if($req[1]){
//接收資訊
while($result = @fgets($fp, 1024)){
 //print $result;
if(substr($result,3,1) == " ") { break; }
};
if (!strstr($req[1],substr($result,0,3))){
$result_str.=$req[2].$result."<br>";
}
}
}
//關閉串連
@fclose($fp);
//print $result_str;
return $result_str;
//return $result;
}
?> 

使用的時候請用str_replace 去掉分行符號才能發送長文本