WordPress at a glance
function is not described

SimplePie_Cache_Redis::mtime() public WP 1.0

Retrieve the last modified time for the cache

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

No Hooks.

Return

Int. Timestamp

Usage

$SimplePie_Cache_Redis = new SimplePie_Cache_Redis();
$SimplePie_Cache_Redis->mtime();

Code of SimplePie_Cache_Redis::mtime() WP 5.7.2

<?php
public function mtime() {

    $data = $this->cache->get($this->name);

    if ($data !== false) {
        return time();
    }

    return false;
}