WordPress at a glance
function is not described

IXR_Client::isError() public WP 1.0

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

No Hooks.

Return

null. Nothing.

Usage

$IXR_Client = new IXR_Client();
$IXR_Client->isError();

Code of IXR_Client::isError() WP 5.7.2

<?php
function isError()
{
    return (is_object($this->error));
}