/**
* Read a key from the cache
*
* @param string $key Identifier for the data
* @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
*/
public function read($key)
{
if (!$this->_init || $this->_setKey($key) === false) {
return false;
}
if ($this->settings['lock']) {
$this->_File->flock(LOCK_SH);
}
$this->_File->rewind();
$time = time();
$cachetime = intval($this->_File->current());
if ($cachetime !== false && ($cachetime < $time || $time + $this->settings['duration'] < $cachetime)) {
if ($this->settings['lock']) {
$this->_File->flock(LOCK_UN);
}
return false;
}
$data = '';
$this->_File->next();
while ($this->_File->valid()) {
$data .= $this->_File->current();
$this->_File->next();
}
if ($this->settings['lock']) {
$this->_File->flock(LOCK_UN);
}
$data = trim($data);
if ($data !== '' && !empty($this->settings['serialize'])) {
if ($this->settings['isWindows']) {
$data = str_replace('\\\\\\\\', '\\', $data);
}
$data = unserialize((string) $data);
}
return $data;
}
