使用php直接打开socket端口进行发信的小程序 特点是使用smtp认证，能够更好的使用满足一般网友建站需要。 整个源码附在本文中，同样内容可到下列地址下载。 转载请注明出处。 http://www.knowsky.com/download/phpsendmail.rar /******************************************/ /*          Php webmail sender            */ /*           www.ebugs.org                */ /* Copyright 富翁 in im286.com 2005.03.07 */ /*           转载请注明出处               */ /******************************************/ //使用前请首先按照提示进行配置发信认证的用户名、密码以及smtp服务器地址、发件人信箱等。 //注意将#替换成#，落伍(www.im286.com）负翁版权所有，可随意使用，但保留版权信息 //例子 echo send_mail('fuweng#im286.com','发信标题','发信内容'); function send_mail($to, $subject = 'No subject', $body) {         $loc_host = "im286";            //发信计算机名，可随意         $smtp_acc = "fuweng#im286.com"; //Smtp认证的用户名，类似fuweng@im286.com，或者fuweng         $smtp_pass="password";          //Smtp认证的密码，一般等同pop3密码         $smtp_host="smtp.im286.com";    //SMTP服务器地址，类似 smtp.tom.com         $from="fuweng#im286.com";       //发信人Email地址，你的发信信箱地址     $headers = "Content-Type: text/plain; charset=\"gb2312\"\r\nContent-Transfer-Encoding: base64";     $lb="\r\n";                    //linebreak         $hdr = explode($lb,$headers);     //解析后的hdr     if($body) {$bdy = preg_replace("/^\./","..",explode($lb,$body));}//解析后的Body         $smtp = array(                 //1、EHLO，期待返回220或者250                 array("EHLO ".$loc_host.$lb,"220,250","HELO error: "),                 //2、发送Auth Login，期待返回334                 array("AUTH LOGIN".$lb,"334","AUTH error:"),                 //3、发送经过Base64编码的用户名，期待返回334                 array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "),                 //4、发送经过Base64编码的密码，期待返回235                 array(base64_encode($smtp_pass).$lb,"235","AUTHENTIFICATION error : "));         //5、发送Mail From，期待返回250         $smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: ");         //6、发送Rcpt To。期待返回250         $smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: ");         //7、发送DATA，期待返回354         $smtp[] = array("DATA".$lb,"354","DATA error: ");         //8.0、发送From         $smtp[] = array("From: ".$from.$lb,"","");         //8.2、发送To         $smtp[] = array("To: ".$to.$lb,"","");         //8.1、发送标题         $smtp[] = array("Subject: ".$subject.$lb,"","");         //8.3、发送其他Header内容         foreach($hdr as $h) {$smtp[] = array($h.$lb,"","");}         //8.4、发送一个空行，结束Header发送         $smtp[] = array($lb,"","");         //8.5、发送信件主体         if($bdy) {foreach($bdy as $b) {$smtp[] = array(base64_encode($b.$lb).$lb,"","");}}         //9、发送“.”表示信件结束，期待返回250         $smtp[] = array(".".$lb,"250","DATA(end)error: ");         //10、发送Quit，退出，期待返回221         $smtp[] = array("QUIT".$lb,"221","QUIT error: ");         //打开smtp服务器端口         $fp = @fsockopen($smtp_host, 25);         if (!$fp) echo "[b]Error:[/b] Cannot conect to ".$smtp_host." ";         while($result = @fgets($fp, 1024)){if(substr($result,3,1) == " ") { break; }}         $result_str="";         //发送smtp数组中的命令/数据         foreach($smtp as $req){                 //发送信息                 @fputs($fp, $req[0]);                 //如果需要接收服务器返回信息，则                 if($req[1]){                         //接收信息                         while($result = @fgets($fp, 1024)){                                 if(substr($result,3,1) == " ") { break; }                         };                         if (!strstr($req[1],substr($result,0,3))){                                 $result_str.=$req[2].$result." ";                         }                 }         }         //关闭连接         @fclose($fp);         return $result_str; } ?>