如何从数据库查询（PHP）向多个收件人发送电子邮件

Question

我正在尝试将电子邮件发送到我的数据库中的多个电子邮件地址。 这是我目前的代码。 它仅在我指定单个电子邮件地址时才起作用，但是，我需要让他们查询我的数据库并将电子邮件发送到每个电子邮件地址。 我在哪里错了？

function sendmail($cat, $user) {
    require_once "Mail.php";
    $elist = mysql_query("SELECT cEmail FROM tblUsers WHERE cAlerts = 'All' AND cEAlerts = 'Yes' AND cPreferences LIKE '%$cat%';");
    $elist = mysql_fetch_array($elist);

    $from = "EMAIL ADDRESS";
    $to = $elist;
    $subject = "SUBJECT";
    $body = "BODY";

    $host = "smtp.domain.com";
    $username = "USERNAME";
    $password = "PASSWORD";

    $headers = array ('From' => $from,
    'To' => $to,
    'Subject' => $subject);
    $smtp = Mail::factory('smtp',
    array ('host' => $host,
    'auth' => true,
    'username' => $username,
    'password' => $password));

    $mail = $smtp->send($to, $headers, $body);
 }

Answer 1

尝试这样的事情，但需要注意的一点是，您应该单独发送电子邮件，而不是将所有电子邮件地址分组到一个“收件人”字段中。 其他用户可能不喜欢其他人看到这一点。 也许你的smtp函数会破坏数组，不确定： - |

function sendmail($cat, $user)
{ 
    require_once "Mail.php"; 
    $elist = mysql_query("SELECT cEmail FROM tblUsers WHERE cAlerts = 'All' AND cEAlerts = 'Yes' AND cPreferences LIKE '%$cat%';"); 

    $from = "EMAIL ADDRESS"; 
    $subject = "SUBJECT"; 
    $body = "BODY"; 

    $host = "smtp.domain.com"; 
    $username = "USERNAME"; 
    $password = "PASSWORD"; 

        if(mysql_num_rows($elist) > 0)
        {
            while($elist_result = mysql_fetch_array($elist))
            {
            $headers = array ('From' => $from, 
            'To' => $elist_result['cEmail'], 
            'Subject' => $subject); 
            $smtp = Mail::factory('smtp', 
            array ('host' => $host, 
            'auth' => true, 
            'username' => $username, 
            'password' => $password)); 

            $mail = $smtp->send($to, $headers, $body); 
            }
        }
 } 

Answer 2

在尝试循环访问收件人的数据库表时，我遇到了类似的问题，目的是向每个收件人发送个性化的PEAR电子邮件。

我遇到的问题是循环将在一次迭代后停止，直到我修改$recipients只是发送数组中的第一项，如此代码片段所示。 （ $recipients是$recipients的ID数组）：

/*PEAR mail set-up code included here*/

for ($i = 0; $i < count($recipients); $i++) {

$sql_recipients = "SELECT * FROM $data_table WHERE id = $recipients[$i] ORDER BY id  ASC ";
$res_recipients = mysqli_query($mysqli,$sql_recipients)
or die (mysqli_error($mysqli));

$recipients_info = mysqli_fetch_array($res_recipients);
$recip_id = $recipients_info['id'];
$recip_organisation = $recipients_info['organisation'];
$recip_fname = $recipients_info['fname'];
$recip_lname = $recipients_info['lname'];
$recip_email = $recipients_info['email'];

/*PEAR mail code here */

$recipients[0] = $recip_email;

$mail->send($recipients[0], $hdrs, $body);

}

Answer 3

mysql_fetch_array获取一个数组，其中的条目对应于表的单个行的每个列。 换句话说，这是一个包含一个用户的cEmail列的数组。

在调用邮件函数之前，需要将所有值提取到单个数组中。 你可以这样做：

$dest = array();
while ($arr = mysql_fetch_array($elist)) {
   $dest[] = $arr['cEmail'];
}

Answer 4

我从书中的一个例子中学到了这一点，我正在学习PHP， Head First PHP和MySQL 。

您可以做的是单独发送每封电子邮件，但同时通过while循环发送。 使用mysqli_query选择电子邮件，制作一个通过我的电子邮件的while循环

while ($row_data = mysqli_fetch_array($your_query_in_a_variable)) {

    // Then you will set your variables for the e-mail using the data 
    // from the array.

    $from = 'you@yoursite.com';
    $to = $row_data['email']; // The column where your e-mail was stored.
    $subject = 'Open Me!';
    $msg = 'Hello world!';
    mail($to, $msg, $from);
}

我希望这很清楚。 你基本上只是在你的查询中调用你想要的行，然后使用mysqli_fetch_array ，每次调用时都会遍历每一行（有人纠正我，如果错误），并且当没有剩下的行被调用时将退出。

Answer 5

我的建议是使用php mail（）函数并在php.ini文件中设置smtp服务器参数。

然后，您所要做的就是查询您的数据库，将第一条记录拉出来作为您的地址，然后遍历结果集并将每个电子邮件地址放入一个数组中。 然后只需使用join函数将逗号连接到数组，并将其用作标题字符串的BCC。

如果可能的话，这就是我会使用的。 我在//评论中加入了几个笔记

function sendmail($cat, $user) {

    $result = mysql_query("SELECT cEmail FROM tblUsers WHERE cAlerts = 'All' AND cEAlerts = 'Yes' AND cPreferences LIKE '%$cat%';");

    //pull out first email as the to address
    $to = mysql_fetch_array($result);

    //create array to store all the emails
    $elist = array();

    //loop through and put each email into an array
    // you might be able to skip this altogether if you can just join $result
    // but I'm to lazy to investigate what all is being returned 
    while($row = mysql_fetch_assoc($result)){
        $elist[] = $row['cEmail'];
    }

    //join the emails into a comma separated string
    $bcc = join($elist, ",");

    $from = "EMAIL ADDRESS";
    $subject = "SUBJECT";
    $body = "BODY";

    $headers  = "From: ". $from ."\r\n";
    $headers  .="BCC: ". $bcc ."\r\n";

    mail($to, $subject, $body, $headers);
}

希望这是有用的信息。随意分开并使用你可能需要的任何东西，比如你可以使用part来实现你的Mail类。

Answer 6

你不应该使用php mail()函数。 它很慢，因为它会在您发送的每封邮件中完全连接到smtp服务器。
一个好的邮件库，如Zend_Mail只连接一次，并将一批邮件传递给smtp服务器。
你也应该不发送通过长BCC行所有邮件。 至少如果您希望自己的电子邮件不被标记为垃圾邮件（请参阅此问题和Jeff的此博客条目）。

<?php
function sendmail($cat, $user) {
    // Setup mailer
    require_once "Mail.php";

    $smtp = Mail::factory('smtp', array(
        'host'     => "smtp.domain.com";
        'auth'     => true,
        'username' => "USERNAME";
        'password' => "PASSWORD";
    ));

    // ALWAYS escape your variables!
    $query = sprintf("SELECT cEmail FROM tblUsers WHERE cAlerts = 'All' AND cEAlerts = 'Yes' AND cPreferences LIKE '%s'",
            mysql_real_escape_string($cat),

    // submit the query
    $result = mysql_query($query);

    // iterate over each row
    while ($row = mysql_fetch_assoc($result)) {
        $from    = "EMAIL ADDRESS";
        $to      = $row['cEmail'];
        $subject = "SUBJECT";
        $body    = "BODY";

        $headers = array(
            'From'    => $from,
            'To'      => $to,
            'Subject' => $subject
        );

        // Send mail with individual to-address via smtp 
        $mail = $smtp->send($to, $headers, $body);
    }
}

Answer 7

使用此代码解决您的问题。

  //Connect to database
  mysql_connect("localhost","user","password") or die(mysql_error());
  mysql_select_db("db") or die(mysql_error()); 
  $sql = "SELECT email FROM members";  
  $res = mysql_query($sql) or die(mysql_error());
  while($row = mysql_fetch_assoc($res) )   
  {  
      $area .= $row['email']. ", ";
  }

  // read the list of emails from the file.
  $email_list = explode(',', $area);

  // count how many emails there are.
  $total_emails = count($email_list);

  // go through the list and trim off the newline character.
  for ($counter=0; $counter<$total_emails; $counter++)
  {
      $email_list[$counter] = trim($email_list[$counter]);
  }
  $to = $email_list;
  echo $to;