Add cc and bcc to wp_mail() headers

$headers[] = 'From: Some One <someone@example.com>';

$headers[] = 'Cc: cc_number_1@email.com';
$headers[] = 'Cc: cc_number_2@email.com';

$headers[] = 'Bcc: bcc_number_1@email.com';
$headers[] = 'Bcc: bcc_number_2@email.com';

$success = wp_mail( $emails, $subject, $message, $headers );

//
// OR...
//

$headers[] = 'From: Some One <someone@example.com>';

foreach( $cc_email_array as $email ) {
    $headers[] = 'Cc: ' . $email;
}

foreach( $bcc_email_array as $email ) {
    $headers[] = 'Bcc: ' . $email;
}

$success = wp_mail( $emails, $subject, $message, $headers );