WordPress at a glance
function is not described

PHPMailer\PHPMailer

PHPMailer::clearBCCs() public WP 1.0

Clear all BCC recipients.

{} It's a method of the class: PHPMailer{}

No Hooks.

Return

null. Nothing.

Usage

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

Code of PHPMailer::clearBCCs() WP 5.7.2

<?php
public function clearBCCs()
{
    foreach ($this->bcc as $bcc) {
        unset($this->all_recipients[strtolower($bcc[0])]);
    }
    $this->bcc = [];
    $this->clearQueuedAddresses('bcc');
}