WordPress at a glance
function is not described

SimplePie_Cache_Memcached::touch() public WP 1.0

Set the last modified time to the current time

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

No Hooks.

Return

true|false. Success status

Usage

$SimplePie_Cache_Memcached = new SimplePie_Cache_Memcached();
$SimplePie_Cache_Memcached->touch();

Code of SimplePie_Cache_Memcached::touch() WP 5.7.2

<?php
public function touch() {
    $data = $this->cache->get($this->name);
    return $this->setData($data);
}