WordPress at a glance
function is not described

SimplePie_Cache_MySQL::mtime() public WP 1.0

Retrieve the last modified time for the cache

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

No Hooks.

Return

Int. Timestamp

Usage

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

Code of SimplePie_Cache_MySQL::mtime() WP 5.7.2

<?php
public function mtime()
{
	if ($this->mysql === null)
	{
		return false;
	}

	$query = $this->mysql->prepare('SELECT `mtime` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id');
	$query->bindValue(':id', $this->id);
	if ($query->execute() && ($time = $query->fetchColumn()))
	{
		return $time;
	}

	return false;
}