WordPress at a glance
function is not described

wpdb::__unset() public WP 3.5.0

Makes private properties un-settable for backward compatibility.

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

No Hooks.

Return

Null. Nothing.

Usage

global $wpdb;
$wpdb->__unset( $name );
$name(string) (required)
The private member to unset

Changelog

Since 3.5.0 Introduced.

Code of wpdb::__unset() WP 5.5.3

<?php
public function __unset( $name ) {
	unset( $this->$name );
}