Stuff

<?phpclass Template {   var $vars;   var $path;   function Template($path = null) {       $this->path = $path;       $this->vars = array();   }   function set_path($path) {       $this->path = $path;   }   function set($name, $value) {       $this->vars[$name] = $value;   }   function set_vars($vars, $clear = false) {       if($clear) {           $this->vars = $vars;       }       else {           if(is_array($vars)) $this->vars = array_merge($this->vars, $vars);       }   }   function fetch($file) {       extract($this->vars);       ob_start();       include($this->path . $file);       $contents = ob_get_contents();       ob_end_clean();       return $contents;   }}class CachedTemplate extends Template {   var $cache_id;   var $expire;   var $cached;   function CachedTemplate($path, $cache_id = null, $expire = 900) {       $this->Template($path);       $this->cache_id = $cache_id ? 'cache/' . md5($cache_id) : $cache_id;       $this->expire   = $expire;   }   function is_cached() {       if($this->cached) return true;       // Passed a cache_id?       if(!$this->cache_id) return false;       // Cache file exists?       if(!file_exists($this->cache_id)) return false;       if(!($mtime = filemtime($this->cache_id))) return false;       // Cache expired?       if(($mtime + $this->expire) < time()) {           @unlink($this->cache_id);           return false;       }       else {           $this->cached = true;           return true;       }   }   function fetch_cache($file) {       if($this->is_cached()) {           $fp = @fopen($this->cache_id, 'r');           $contents = fread($fp, filesize($this->cache_id));           fclose($fp);           return $contents;       }       else {           $contents = $this->fetch($file);           // Write the cache           if($fp = @fopen($this->cache_id, 'w')) {               fwrite($fp, $contents);               fclose($fp);           }           else {               die('Unable to write cache.');           }           return $contents;       }   }}?>