Fuel Cache Example

gistfile1.aw

<?php

		private function add_external_assets ( ) {
			
			$url = 'http://twitter.github.com/bootstrap/1.3.0/bootstrap.min.css';
			
			try {
				$content = Cache::get( md5( $url ) );
			}
			catch ( CacheNotFoundException $e ) {
				$content = null;
			}
			
			if ( $content === null ) {
				$content = $this->get_external_asset( $url );
			}
			
			Casset::css_inline( $content );
			
			
			$url = 'http://twitter.github.com/bootstrap/1.3.0/bootstrap-dropdown.js';
			
			try {
				$content = Cache::get( md5( $url ) );
			}
			catch ( CacheNotFoundException $e ) {
				$content = null;
			}
			
			if ( $content === null ) {
				$content = $this->get_external_asset( $url );
			}
			
			Casset::js_inline( $content );
			
		}
		
		private function get_external_asset ( $url, $cache = true ) {
			
			$options = array(
				'http' => array(
					'timeout' => 3,
				),
			);
			
			$context = stream_context_create( $options );
			
			$contents = file_get_contents( $url, false, $context );
			
			// get the expires header
			$headers = $this->parse_headers( $http_response_header );
			
			if ( !isset( $headers['Expires'] ) ) {
				$expires = time() + ( 24 * 60 * 60 );		// 24 hours from now
			}
			else {
				$expires = new DateTime( $headers['Expires'] );
				$expires = $expires->format( 'U' );
			}
			
			
			// are we supposed to cache it?
			if ( $cache ) {
				Cache::set( md5( $url ), $contents, $expires );
			}
			
			return $contents;
			
		}

?>