ParamsReturnSource
Controls how or whether the client browser and web proxies should cache this response.

Parameters

  • mixed $expires This can be a Unix timestamp indicating when the page expires, or a string indicating the relative time offset that a page should expire, i.e. `"+5 hours". Finally, `$expires` can be set to `false` to completely disable browser or proxy caching.

Returns

void

Source

						public function cache($expires) {
		if ($expires === false) {
			return $this->headers(array(
				'Expires' => 'Mon, 26 Jul 1997 05:00:00 GMT',
				'Cache-Control' => array(
					'no-store, no-cache, must-revalidate',
					'post-check=0, pre-check=0',
					'max-age=0'
				),
				'Pragma' => 'no-cache'
			));
		}
		$expires = is_int($expires) ? $expires : strtotime($expires);

		return $this->headers(array(
			'Expires' => gmdate('D, d M Y H:i:s', $expires) . ' GMT',
			'Cache-Control' => 'max-age=' . ($expires - time()),
			'Pragma' => 'cache'
		));
	}