php 发送邮件函数

<?php  /**   * 记录数据   */  function runlog($mode = 'SMTP',$b = '',$c = '',$d='') {         }     /**   * 发送邮件   * @param $toemail 收件人email   * @param $subject 邮件主题   * @param $message 正文   */     function sendmail($toemail, $subject, $message) {             $config = array (          'mailsend' => 2,          'maildelimiter' => 1,          'mailusername' => 1,          'server' => 'smtp.qq.com',          'port' => 25,          'mail_type' => 1,          'auth' => 1,          'from' => '123456@qq.com',          'auth_username' => '123456@qq.com',          'auth_password' => 'password',      );          $charset   = 'utf-8';      $mail      = $config;      $from      = $config['from'];      $mail_type = $config['mail_type'];         //mail 发送模式      if($mail_type==0) {          $headers  = 'MIME-Version: 1.0' . "\r\n";          $headers .= 'Content-type: text/html; charset='.$charset.'' . "\r\n";          $headers .= 'From: <'.$from.'>' . "\r\n";          mail($toemail, $subject, $message, $headers);          return true;      }      //邮件头的分隔符      $maildelimiter = $mail['maildelimiter'] == 1 ? "\r\n" : ($mail['maildelimiter'] == 2 ? "\r" : "\n");      //收件人地址中包含用户名      $mailusername = isset($mail['mailusername']) ? $mail['mailusername'] : 1;      //端口      $mail['port'] = $mail['port'] ? $mail['port'] : 25;      $mail['mailsend'] = $mail['mailsend'] ? $mail['mailsend'] : 1;             //发信者      $email_from = $from == '' ? '=?'.$charset.'?B?'."?= <".$from.">" : (preg_match('/^(.+?) \<(.+?)\>$/',$from, $mats) ? '=?'.$charset.'?B?'.base64_encode($mats[1])."?= <$mats[2]>" : $from);             $email_to = preg_match('/^(.+?) \<(.+?)\>$/',$toemail, $mats) ? ($mailusername ? '=?'.$charset.'?B?'.base64_encode($mats[1])."?= <$mats[2]>" : $mats[2]) : $toemail;;             $email_subject = '=?'.$charset.'?B?'.base64_encode(preg_replace("/[\r|\n]/", '', $subject)).'?=';      $email_message = chunk_split(base64_encode(str_replace("\n", "\r\n", str_replace("\r", "\n", str_replace("\r\n", "\n", str_replace("\n\r", "\r", $message))))));             $headers = "From: $email_from{$maildelimiter}X-Priority: 3{$maildelimiter}X-Mailer: PHPCMS-V9 {$maildelimiter}MIME-Version: 1.0{$maildelimiter}Content-type: text/html; charset=".$charset."{$maildelimiter}Content-Transfer-Encoding: base64{$maildelimiter}";                 if(!$fp = fsockopen($mail['server'], $mail['port'], $errno, $errstr, 30)) {          runlog('SMTP', "($mail[server]:$mail[port]) CONNECT - Unable to connect to the SMTP server", 0);          return false;      }      stream_set_blocking($fp, true);         $lastmessage = fgets($fp, 512);      if(substr($lastmessage, 0, 3) != '220') {          runlog('SMTP', "$mail[server]:$mail[port] CONNECT - $lastmessage", 0);          return false;      }         fputs($fp, ($mail['auth'] ? 'EHLO' : 'HELO')." phpcms\r\n");      $lastmessage = fgets($fp, 512);      if(substr($lastmessage, 0, 3) != 220 && substr($lastmessage, 0, 3) != 250) {          runlog('SMTP', "($mail[server]:$mail[port]) HELO/EHLO - $lastmessage", 0);          return false;      }         while(1) {          if(substr($lastmessage, 3, 1) != '-' || empty($lastmessage)) {              break;          }          $lastmessage = fgets($fp, 512);      }         if($mail['auth']) {          fputs($fp, "AUTH LOGIN\r\n");          $lastmessage = fgets($fp, 512);          if(substr($lastmessage, 0, 3) != 334) {              runlog('SMTP', "($mail[server]:$mail[port]) AUTH LOGIN - $lastmessage", 0);              return false;          }             fputs($fp, base64_encode($mail['auth_username'])."\r\n");          $lastmessage = fgets($fp, 512);          if(substr($lastmessage, 0, 3) != 334) {              runlog('SMTP', "($mail[server]:$mail[port]) USERNAME - $lastmessage", 0);              return false;          }             fputs($fp, base64_encode($mail['auth_password'])."\r\n");          $lastmessage = fgets($fp, 512);          if(substr($lastmessage, 0, 3) != 235) {              runlog('SMTP', "($mail[server]:$mail[port]) PASSWORD - $lastmessage", 0);              return false;          }             $email_from = $mail['from'];      }         fputs($fp, "MAIL FROM: <".preg_replace("/.*\<(.+?)\>.*/", "\\1", $email_from).">\r\n");      $lastmessage = fgets($fp, 512);      if(substr($lastmessage, 0, 3) != 250) {          fputs($fp, "MAIL FROM: <".preg_replace("/.*\<(.+?)\>.*/", "\\1", $email_from).">\r\n");          $lastmessage = fgets($fp, 512);          if(substr($lastmessage, 0, 3) != 250) {              runlog('SMTP', "($mail[server]:$mail[port]) MAIL FROM - $lastmessage", 0);              return false;          }      }         fputs($fp, "RCPT TO: <".preg_replace("/.*\<(.+?)\>.*/", "\\1", $toemail).">\r\n");      $lastmessage = fgets($fp, 512);      if(substr($lastmessage, 0, 3) != 250) {          fputs($fp, "RCPT TO: <".preg_replace("/.*\<(.+?)\>.*/", "\\1", $toemail).">\r\n");          $lastmessage = fgets($fp, 512);          runlog('SMTP', "($mail[server]:$mail[port]) RCPT TO - $lastmessage", 0);          return false;      }         fputs($fp, "DATA\r\n");      $lastmessage = fgets($fp, 512);      if(substr($lastmessage, 0, 3) != 354) {          runlog('SMTP', "($mail[server]:$mail[port]) DATA - $lastmessage", 0);          return false;      }         $headers .= 'Message-ID: <'.gmdate('YmdHs').'.'.substr(md5($email_message.microtime()), 0, 6).rand(100000, 999999).'@'.$_SERVER['HTTP_HOST'].">{$maildelimiter}";         fputs($fp, "Date: ".gmdate('r')."\r\n");      fputs($fp, "To: ".$email_to."\r\n");      fputs($fp, "Subject: ".$email_subject."\r\n");      fputs($fp, $headers."\r\n");      fputs($fp, "\r\n\r\n");      fputs($fp, "$email_message\r\n.\r\n");      $lastmessage = fgets($fp, 512);      if(substr($lastmessage, 0, 3) != 250) {          runlog('SMTP', "($mail[server]:$mail[port]) END - $lastmessage", 0);      }      fputs($fp, "QUIT\r\n");      return true;  }     ?>