PHPMailer\PHPMailer

PHPMailer::clearCustomHeaders │ public │ WP 1.0

Clear all custom headers.

Method of the class: PHPMailer{}

No Hooks.

Returns

null. Nothing (null).

Usage

$PHPMailer = new PHPMailer();
$PHPMailer->clearCustomHeaders();

PHPMailer::clearCustomHeaders() code WP 7.0

wp-includes/PHPMailer/PHPMailer.php 
public function clearCustomHeaders()
{
    $this->CustomHeader = [];
}