我试图在发送电子邮件时不透露收件人，但我失败了：
$email = implode('; ', $email); // array where I have the emails
$to = $email; // webmaster@domain.com; webmaster@anotherdomain.com
$subject = 'Subject';
$headers = "From: noreply@domainfromwhereisendemail.com'r'n" . "X-Mailer: php'r'n";
$headers .= "MIME-Version: 1.0'r'n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1'r'n";
$headers .= "To: Undisclosed Recipients <noreply@domainfromwhereisendemail.com>'r'n";
//$headers .= "Cc: $to'r'n";
$message =
<<<START
This is the message
START;
mail($to, $subject, $message, $headers);
我尝试添加抄送或密件抄送，但不起作用，它除了添加电子邮件外，还添加了未公开的收件人。我正在尝试在没有任何其他扩展的情况下执行此操作，我在这里检查了很多来自stackoverflow的问题，但没有完成此操作。电子邮件仍在向每个人显示。
不，您无法阻止其保密，除非您使用循环单独发送电子邮件。
$email = implode('; ', $email); // <---- Don't do this.
循环方式..
foreach($email as $mail) #<---- Use a foreach and loop through
{
$to = $mail;
$subject = 'Subject';
$headers = "From: noreply@domainfromwhereisendemail.com'r'n" . "X-Mailer: php'r'n";
$headers .= "MIME-Version: 1.0'r'n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1'r'n";
$message =
<<<START
This is the message
START;
mail($to, $subject, $message, $headers);
}
这是只需
调用一次mail()即可的 ôkio 解决方案：
$subject = 'Subject';
$headers = "X-Mailer: php'r'n";
# $headers .= "MIME-Version: 1.0'r'n"; # do you really need that?
$headers .= "Content-Type: text/html; charset=ISO-8859-1'r'n";
foreach($email as $mail){
$headers .= "Bcc: ".$mail."'r'n";
}
$message =
<<<START
This is the message
START;
mail('non@existing.email', $subject, $message, $headers);