ndle, 1);

					if (!feof($handle))
					{
						// Somebody tampered with our data
						$data = false;
					}
					break;
				}
				else
				{
					// Something went wrong
					break;
				}
				$line++;
			}
			fclose($handle);

			// unserialize if we got some data
			$data = ($data !== false) ? @unserialize($data) : $data;

			if ($data === false)
			{
				$this->remove_file($file);
				return false;
			}

			return $data;
		}
	}

	/**
	* Write cache data to a specified file
	*
	* 'data_global' is a special case and the generated format is different for this file:
	* <code>
	*