将php邮件发送到特殊字符电子邮件地址，例如äüö

Question

我正在使用paypal API，我需要向拥有特殊字符的电子邮件地址的收件人发送php电子邮件。一切正常，只要我不发送电子邮件到ü@example.com，ö@ example.com等等......但自2012年以来，这些字符存在于电子邮件地址中，我无法让php了解这些字符串对。有人可以帮帮我???

    <?php
    $message = "Bla"
    $item_name = $_POST['item_name'];
    $payer_email = $_POST['payer_email'];

    $email_from = 'office@rhythm-one.com'; 
    address
    $email_subject = '=?UTF-8?
    B?'.base64_encode('Bestellbestätigung').'?='; 
    $email_body = "$message";

    $to = $_POST['payer_email'];//<== This could contain ä,ü or ö
    $headers  = 'MIME-Version: 1.0' . "\r\n";
    $headers .= 'Content-type: text/html; charset=UTF-8' . "\r\n";
    $headers .= "From: office@rhythm-one.com \r\n";
    $headers .= "Reply-To: office@rhythm-one.com \r\n";
    //Send the email!
    mail($to,$email_subject,$email_body,$headers);
    ?> 

Answer 1

您需要将其编码为utf8

$to = utf8_encode($_POST['payer_email'];