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
".$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 (!$fp) echo " ``` Error: ``` Cannot conect to ".$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; } ?>