WordPress at a glance
function is not described

IXR_Date::getTimestamp() public WP 1.0

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

No Hooks.

Return

Null. Nothing.

Usage

$IXR_Date = new IXR_Date();
$IXR_Date->getTimestamp();

Code of IXR_Date::getTimestamp() WP 5.5.2

<?php
function getTimestamp()
{
    return mktime($this->hour, $this->minute, $this->second, $this->month, $this->day, $this->year);
}