PHPMailer\PHPMailer

PHPMailer::getSMTPInstance │ public │ WP 1.0

Get an instance to use for SMTP operations. Override this function to load your own SMTP implementation, or set one with setSMTPInstance.

Method of the class: PHPMailer{}

No Hooks.

Returns

SMTP.

Usage

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

PHPMailer::getSMTPInstance() code WP 7.0

wp-includes/PHPMailer/PHPMailer.php 
public function getSMTPInstance()
{
    if (!is_object($this->smtp)) {
        $this->smtp = new SMTP();
    }

    return $this->smtp;
}