如何正确运用PHP发送邮件函数

PHP发送邮件函数的应用代码示例：
#echo send_mail($_POST["email"],$tosubject,$_POST["errortext"]); echo send_mail('someone@126.com','only a test mail for test php mail function','一封垃圾邮件'); echo time(); function send_mail($to, $subject = 'No subject', $body) { $loc_host = "mail.server"; //发信计算机名，可随意 $smtp_acc = "smp@163.com"; //Smtp认证的用户名 $smtp_pass="pwdpwd"; //Smtp认证的密码，一般等同pop3密码 $smtp_host="smtp.163.com"; //SMTP服务器地址，类似 smtp.tom.com $from="smp@163.com"; //发信人Email地址，你的发信信箱地址 $deliver=$smtp_acc; //回复到指定邮箱 $headers = "Content-Type: text/plain; charset="gb2312"rnContent-Transfer-Encoding: base64"; $lb="rn"; //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 $smtp[] = array("From: ".$deliver.$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."<br>"; 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].$result."<br>"; } } } //关闭连接 @fclose($fp); return $result_str; } 希望上面这段代码示例能让大家充分掌握PHP发送邮件函数的运用。