PHPMailer\PHPMailer\PHPMailer::sign
Set the public and private key files and password for S/MIME signing.
Signature
public function sign(string
$cert_filename,
string
$key_filename,
string
$key_pass,
[string
$extracerts_filename = ''] )
Parameters
$cert_filename
— string$key_filename
— string$key_pass
— string- Password for private key
$extracerts_filename
— string- Optional path to chain certificate