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<?php
// +----------------------------------------------------------------------
// | wechat-php-sdk
// +----------------------------------------------------------------------
// | 版权所有 2014~2017 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
// +----------------------------------------------------------------------
// | 官方文档: https://www.kancloud.cn/zoujingli/wechat-php-sdk
// +----------------------------------------------------------------------
// | 开源协议 ( https://mit-license.org )
// +----------------------------------------------------------------------
// | github开源项目：https://github.com/zoujingli/wechat-php-sdk
// +----------------------------------------------------------------------
namespace Wechat\Lib;
use Wechat\Loader;
/**
* 微信SDK基础缓存类
*
* @author Anyon <zoujingli@qq.com>
* @date 2016-08-20 17:50
*/
class Cache
{
/**
* 缓存位置
* @var string
*/
static public $cachepath;
/**
* 设置缓存
* @param string $name
* @param string $value
* @param int $expired
* @return mixed
*/
static public function set($name, $value, $expired = 0)
{
if (isset(Loader::$callback['CacheSet'])) {
return call_user_func_array(Loader::$callback['CacheSet'], func_get_args());
}
$data = serialize(array('value' => $value, 'expired' => $expired > 0 ? time() + $expired : 0));
return self::check() && file_put_contents(self::$cachepath . $name, $data);
}
/**
* 读取缓存
* @param string $name
* @return mixed
*/
static public function get($name)
{
if (isset(Loader::$callback['CacheGet'])) {
return call_user_func_array(Loader::$callback['CacheGet'], func_get_args());
}
if (self::check() && ($file = self::$cachepath . $name) && file_exists($file) && ($data = file_get_contents($file)) && !empty($data)) {
$data = unserialize($data);
if (isset($data['expired']) && ($data['expired'] > time() || $data['expired'] === 0)) {
return isset($data['value']) ? $data['value'] : null;
}
}
return null;
}
/**
* 删除缓存
* @param string $name
* @return mixed
*/
static public function del($name)
{
if (isset(Loader::$callback['CacheDel'])) {
return call_user_func_array(Loader::$callback['CacheDel'], func_get_args());
}
return self::check() && @unlink(self::$cachepath . $name);
}
/**
* 输出内容到日志
* @param string $line
* @param string $filename
* @return mixed
*/
static public function put($line, $filename = '')
{
if (isset(Loader::$callback['CachePut'])) {
return call_user_func_array(Loader::$callback['CachePut'], func_get_args());
}
empty($filename) && $filename = date('Ymd') . '.log';
return self::check() && file_put_contents(self::$cachepath . $filename, '[' . date('Y/m/d H:i:s') . "] {$line}\n", FILE_APPEND);
}
/**
* 检查缓存目录
* @return bool
*/
static protected function check()
{
empty(self::$cachepath) && self::$cachepath = dirname(__DIR__) . DIRECTORY_SEPARATOR . 'Cache' . DIRECTORY_SEPARATOR;
self::$cachepath = rtrim(self::$cachepath, '/\\') . DIRECTORY_SEPARATOR;
if (!is_dir(self::$cachepath) && !mkdir(self::$cachepath, 0755, true)) {
return false;
}
return true;
}
/**
* 文件缓存，成功返回文件路径
* @param string $content 文件内容
* @param string $filename 文件名称
* @return bool|string
*/
static public function file($content, $filename = '')
{
if (isset(Loader::$callback['CacheFile'])) {
return call_user_func_array(Loader::$callback['CacheFile'], func_get_args());
}
empty($filename) && $filename = md5($content) . '.' . self::getFileExt($content);
if (self::check() && file_put_contents(self::$cachepath . $filename, $content)) {
return self::$cachepath . $filename;
}
return false;
}
/**
* 根据文件流读取文件后缀
* @param string $content
* @return string
*/
static public function getFileExt($content)
{
$types = array(
255216 => 'jpg', 7173 => 'gif', 6677 => 'bmp', 13780 => 'png',
7368 => 'mp3', 4838 => 'wma', 7784 => 'mid', 6063 => 'xml',
);
$typeInfo = @unpack("C2chars", substr($content, 0, 2));
$typeCode = intval($typeInfo['chars1'] . $typeInfo['chars2']);
return isset($types[$typeCode]) ? $types[$typeCode] : 'mp4';
}
}