system/database/DB_cache.php

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * Database Cache Class
 *
 * @category	Database
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/database/
 */
class CI_DB_Cache {

	var $CI;
	var $db;	// allows passing of db object so that multiple database connections and returned db objects can be supported

	/**
	 * Constructor
	 *
	 * Grabs the CI super object instance so we can access it.
	 *
	 */
	function __construct(&$db)
	{
		// Assign the main CI object to $this->CI
		// and load the file helper since we use it a lot
		$this->CI =& get_instance();
		$this->db =& $db;
		$this->CI->load->helper('file');
	}

	// --------------------------------------------------------------------

	/**
	 * Set Cache Directory Path
	 *
	 * @access	public
	 * @param	string	the path to the cache directory
	 * @return	bool
	 */
	function check_path($path = '')
	{
		if ($path == '')
		{
			if ($this->db->cachedir == '')
			{
				return $this->db->cache_off();