WordPress at a glance
function is not described

wp_timezone_supported() WP 2.9.0

Deprecated from version 3.2.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Check for PHP timezone support

No Hooks.

Return

true|false. Null. Nothing.

Usage

wp_timezone_supported();

Changelog

Since 2.9.0 Introduced.
Deprecated 3.2.0

Code of wp_timezone_supported() WP 5.7

<?php
function wp_timezone_supported() {
	_deprecated_function( __FUNCTION__, '3.2.0' );

	return true;
}