如何在php mailer的正文中包含for和多维数组？

$data = array(
    array('name' => 'John', 'email' => 'john@example.com'),
    array('name' => 'Jane', 'email' => 'jane@example.com')
);

$content = '';
for($i = 0; $i < count($data); $i++) {
    $content .= 'Name: ' . $data[$i]['name'] . ', Email: ' . $data[$i]['email'] . '<br>';
}

require 'PHPMailerAutoload.php';

$mail = new PHPMailer;

$mail->isSMTP();
$mail->Host = 'smtp.example.com';
$mail->SMTPAuth = true;
$mail->Username = 'your-email@example.com';
$mail->Password = 'your-email-password';
$mail->SMTPSecure = 'tls';
$mail->Port = 587;

$mail->setFrom('your-email@example.com', 'Your Name');
$mail->addAddress('recipient@example.com', 'Recipient Name');
$mail->isHTML(true);

$mail->Subject = 'Email Subject';
$mail->Body = $content;

if(!$mail->send()) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    echo 'Message has been sent.';
}