public final function output($return = false)
{
ob_start();
if ($this->cache_ctl) {
$this->cache_ctl->output();
}
$this->display_self();
$data = ob_get_clean();
//display_self 中包含来view才能得到view中设置的master view数据
if ($this->check_master()) {
return $this->output_master($data, $return);
}
if ($return) {
return $data;
}
echo $data;
}
public function check_request(YZE_HttpCache $cache)
{
if (!$cache) {
return;
}
if ($cache->last_modified() && @$this->get_from_server('HTTP_IF_MODIFIED_SINCE')) {
if (strtotime($cache->last_modified()) == strtotime($this->get_from_server('HTTP_IF_MODIFIED_SINCE'))) {
throw new YZE_Not_Modified_Exception();
}
}
if ($cache->etag() && @$this->get_from_server('HTTP_IF_NONE_MATCH')) {
if (strcasecmp($cache->etag(), $this->get_from_server('HTTP_IF_NONE_MATCH')) == 0) {
throw new YZE_Not_Modified_Exception();
}
}
}
