/**
* Try to retrieve the compiled template from the cache.
*
* @param string $templateName Template that should be retrieved.
*
* @return bool|Layout Compiled template in form of a string, or bool false if the template is not in cache.
*/
private function getFromCache($templateName)
{
// try to get it from cache
$cachedTemplate = $this->htpl->getCache()->read($templateName);
if (!$cachedTemplate) {
return false;
}
/**
* @var Layout $layout
*/
$layout = unserialize($cachedTemplate);
// check when cache was last touched, so we don't need to revalidate all templates
$lastTouched = $layout->getLastTouched();
if ($lastTouched > time() - $this->htpl->getOptions()['cacheValidationTTL']) {
return $layout;
}
foreach ($layout->getIncludedFiles() as $tplFile => $tplFileCreatedOn) {
// verify if cache is still fresh, for all included templates in this layout
if ($lastTouched < $this->htpl->getTemplateProvider()->createdOn($tplFile)) {
$this->htpl->getCache()->delete($templateName);
return false;
}
}
// update last touched
$layout->setLastTouched(time() + $this->htpl->getOptions()['cacheValidationTTL']);
// cache it again
$this->htpl->getCache()->write($templateName, serialize($layout));
return $layout;
}
public function testGetCache()
{
$provider = new ArrayProvider(['test.htpl' => '{var}']);
$cache = new ArrayCache();
$htpl = new Htpl($provider, $cache);
$this->assertSame($cache, $htpl->getCache());
}