PHP网页编程之PHP发送邮件

刚开始因为习惯于ASP格式的写法，总是在这些方面出现问题，自己还总是找不到问题所在，这就提醒了自己，在写代码的时候一定要认真，不能粗心地老是少个“；”或者字母大小写不分，要不然很可能找半天都找不到错误。   PHP发送邮件的实例，页脸部分代码：

1. $smtpserver = "smtp.163.com";//SMTP办事
   器         $smtpserverport =25;//SMTP办事
   器端口         $smtpusermail = "username@163.com";//SMTP办事
   器的用户邮箱         $smtpemailto = $email;//发送给谁         $smtpuser = "username@163.com";//SMTP办事
   器的用户帐号         $smtppass = "password";//SMTP办事
   器的用户暗码
            $mailsubject = "subject";//邮件主题         $mailbody = file_get_contents("email.html");//读取html文件         $mailbody = str_replace("{name}",$username,$mailbody);//交换
   变量         $mailbody = str_replace("{email}",$email,$mailbody);         $mailbody = str_replace("{password}",$password,$mailbody);         $mailbody = str_replace("{mobile}",$mobile,$mailbody);         $mailtype = "HTML";//邮件格局
   （HTML/TXT）,TXT为文本邮件                  //邮件格局
   （HTML/TXT）,TXT为文本邮件         ##########################################         $smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这外面
   的一个true是暗示
   利用
   身份验证,不然
   不利用
   身份验证.         //$smtp->debug = false;//是不是
   显示发送的调试信息         $smtp->sendmail($smtpemailto,$smtpusermail,$mailsubject,$mailbody,$mailtype);

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以下是邮件办事器的类，直接挪用就好了email.class.php：

1. <? class smtp { /* Public Variables */ var $smtp_port; var $time_out; var $host_name; var $log_file; var $relay_host; var $debug; var $auth; var $user; var $pass;  /* Private Variables */ var $sock;  /* Constractor */ function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass) { $this->debug = FALSE; $this->smtp_port = $smtp_port; $this->relay_host = $relay_host; $this->time_out = 30; //is used in fsockopen() # $this->auth = $auth;//auth $this->user = $user; $this->pass = $pass; # $this->host_name = "localhost"; //is used in HELO command $this->log_file ="";  $this->sock = FALSE; }  /* Main Function */ function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "") { $mail_from = $this->get_address($this->strip_comment($from)); $body = ereg_replace("(^(\r\n))(\\.)", "\\1.\\3", $body); $header = ''; $header .= "MIME-Version:1.0\r\n"; if($mailtype=="HTML"){ $header .= "Content-Type:text/html\r\n"; } $header .= "To: ".$to."\r\n"; if ($cc != "") { $header .= "Cc: ".$cc."\r\n"; } $header .= "From: $from<".$from.">\r\n"; $header .= "Subject: ".$subject."\r\n"; $header .= $additional_headers; $header .= "Date: ".date("r")."\r\n"; $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n"; list($msec, $sec) = explode(" ", microtime()); $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n"; $TO = explode(",", $this->strip_comment($to));  if ($cc != "") { $TO = array_merge($TO, explode(",", $this->strip_comment($cc))); }  if ($bcc != "") { $TO = array_merge($TO, explode(",", $this->strip_comment($bcc))); }  $sent = TRUE; foreach ($TO as $rcpt_to) { $rcpt_to = $this->get_address($rcpt_to); if (!$this->smtp_sockopen($rcpt_to)) { $this->log_write("Error: Cannot send email to ".$rcpt_to."\n"); $sent = FALSE; continue; } if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) { $this->log_write("E-mail has been sent to <".$rcpt_to.">\n"); } else { $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n"); $sent = FALSE; } fclose($this->sock); $this->log_write("Disconnected from remote host\n"); } //echo "<br>"; //echo $header; return $sent; }  /* Private Functions */  function smtp_send($helo, $from, $to, $header, $body = "") { if (!$this->smtp_putcmd("HELO", $helo)) { return $this->smtp_error("sending HELO command"); } #auth if($this->auth){ if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) { return $this->smtp_error("sending HELO command"); }  if (!$this->smtp_putcmd("", base64_encode($this->pass))) { return $this->smtp_error("sending HELO command"); } } # if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) { return $this->smtp_error("sending MAIL FROM command"); }  if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) { return $this->smtp_error("sending RCPT TO command"); }  if (!$this->smtp_putcmd("DATA")) { return $this->smtp_error("sending DATA command"); }  if (!$this->smtp_message($header, $body)) { return $this->smtp_error("sending message"); }  if (!$this->smtp_eom()) { return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]"); }  if (!$this->smtp_putcmd("QUIT")) { return $this->smtp_error("sending QUIT command"); }  return TRUE; }  function smtp_sockopen($address) { if ($this->relay_host == "") { return $this->smtp_sockopen_mx($address); } else { return $this->smtp_sockopen_relay(); } }  function smtp_sockopen_relay() { $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n"); $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out); if (!($this->sock && $this->smtp_ok())) { $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n"); $this->log_write("Error: ".$errstr." (".$errno.")\n"); return FALSE; } $this->log_write("Connected to relay host ".$this->relay_host."\n"); return TRUE;; }  function smtp_sockopen_mx($address) { $domain = ereg_replace("^.+@([^@]+){1}quot;, "\\1", $address); if (!@getmxrr($domain, $MXHOSTS)) { $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n"); return FALSE; } foreach ($MXHOSTS as $host) { $this->log_write("Trying to ".$host.":".$this->smtp_port."\n"); $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out); if (!($this->sock && $this->smtp_ok())) { $this->log_write("Warning: Cannot connect to mx host ".$host."\n"); $this->log_write("Error: ".$errstr." (".$errno.")\n"); continue; } $this->log_write("Connected to mx host ".$host."\n"); return TRUE; } $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n"); return FALSE; }  function smtp_message($header, $body) { fputs($this->sock, $header."\r\n".$body); $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));  return TRUE; }  function smtp_eom() { fputs($this->sock, "\r\n.\r\n"); $this->smtp_debug(". [EOM]\n");  return $this->smtp_ok(); }  function smtp_ok() { $response = str_replace("\r\n", "", fgets($this->sock, 512)); $this->smtp_debug($response."\n");  if (!ereg("^[23]", $response)) { fputs($this->sock, "QUIT\r\n"); fgets($this->sock, 512); $this->log_write("Error: Remote host returned \"".$response."\"\n"); return FALSE; } return TRUE; }  function smtp_putcmd($cmd, $arg = "") { if ($arg != "") { if($cmd=="") $cmd = $arg; else $cmd = $cmd." ".$arg; }  fputs($this->sock, $cmd."\r\n"); $this->smtp_debug("> ".$cmd."\n");  return $this->smtp_ok(); }  function smtp_error($string) { $this->log_write("Error: Error occurred while ".$string.".\n"); return FALSE; }  function log_write($message) { $this->smtp_debug($message);  if ($this->log_file == "") { return TRUE; }  $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message; if (!@file_exists($this->log_file)  !($fp = @fopen($this->log_file, "a"))) { $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n"); return FALSE; } flock($fp, LOCK_EX); fputs($fp, $message); fclose($fp);  return TRUE; }  function strip_comment($address) { $comment = "\\([^()]*\\)"; while (ereg($comment, $address)) { $address = ereg_replace($comment, "", $address); }  return $address; }  function get_address($address) { $address = ereg_replace("([ \t\r\n])+", "", $address); $address = ereg_replace("^.*<(.+)>.*{1}quot;, "\\1", $address);  return $address; }  function smtp_debug($message) { if ($this->debug) { //echo $message."<br>"; } }  function get_attach_type($image_tag) { //  $filedata = array();  $img_file_con=fopen($image_tag,"r"); unset($image_data); while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag)))) $image_data.=$tem_buffer; fclose($img_file_con);  $filedata['context'] = $image_data; $filedata['filename']= basename($image_tag); $extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,".")); switch($extension){ case ".gif": $filedata['type'] = "image/gif"; break; case ".gz": $filedata['type'] = "application/x-gzip"; break; case ".htm": $filedata['type'] = "text/html"; break; case ".html": $filedata['type'] = "text/html"; break; case ".jpg": $filedata['type'] = "image/jpeg"; break; case ".tar": $filedata['type'] = "application/x-tar"; break; case ".txt": $filedata['type'] = "text/plain"; break; case ".zip": $filedata['type'] = "application/zip"; break; default: $filedata['type'] = "application/octet-stream"; break; } return $filedata; } } ?>

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不过还好，PHP语言给出的语法错误很详细，只要稍微熟悉一点之后，看错误提示就能很容易找出错误所在的。PHP还有一个特别好用的调试功能，在PHP语句中，你可以随时用echo来输出结果。

这些都是最基本最常用功能，我们这些菜鸟在系统学习后，可以先对这些功能深入研究。