<?php
 
$DOUBAN_KEY = '你的apikey';
$DOUBAN_USERID = '你的UserId';
$DOUBAN_DB = 'db:subject'; //json_decode后的特殊属性名
$DOUBAN_STATUS = 'db:status'; //json_decode后的特殊属性名
$DOUBAN_TITLE = '$t';  //json_decode后的特殊属性名
$DOUBAN_HREF = '@href'; //json_decode后的特殊属性名
$douban_cache_file_path = dirname(__FILE__) . '/' . 'douban_cache.php'; //豆瓣数据缓存文件地址
$douban_cacle_lifetime = 60; //缓存生存时间
$cats = array (
 'book',
 'movie'
);    //只要两个分类的
 
$sataus = array (
 'wish' => '想看',
 'read' => '看过',
 'reading' => '在看',
 'watched' => '看过'
);    //状态的中英文对应
 
$douban_data = array ();
if (is_file($douban_cache_file_path))
{//缓存文件存在
 $douban_data = include ($douban_cache_file_path); //读取缓存数据
 if (is_array($douban_data) && isset($douban_data['expired']) && $douban_data['expired'] > time())
 {    //数据是数组且有过期时间且未过期
 $douban_data = $douban_data['data'];
 }
 else
 {     //否则设置为空数组
 $douban_data = array ();
 }
}
 
if (count($douban_data) < 1) //没有缓存
{     //数据总数小于1则没有缓存数据或已经过期
 foreach ( $cats as $cat )
 {     //遍历所有分类
 $data = file_get_contents("http://api.douban.com/people/{$DOUBAN_USERID}/collection?cat={$cat}&alt=json&start-index=0&max-results=8&apikey={$DOUBAN_KEY}"); //获取数据
 $data = json_decode($data); //json转换成对象/数组
 $douban_data["{$cat}s"] = array ();
 foreach ( $data->entry as $_subject )
 {     //变量所有对象
 $subject = array ();
 $subject['img'] = $_subject->$DOUBAN_DB->link[2]->$DOUBAN_HREF;    //获取图片地址
 $subject['link'] = $_subject->$DOUBAN_DB->link[1]->$DOUBAN_HREF; //获取连接地址
 $subject['title'] = $_subject->$DOUBAN_DB->title->$DOUBAN_TITLE; //获取标题
 $subject['status'] = $sataus[$_subject->$DOUBAN_STATUS->$DOUBAN_TITLE];    //获取状态
 $douban_data["{$cat}s"][] = $subject; //存进douban_data
 }
 }
 
 $expired = time() + $douban_cacle_lifetime;    //过期时间,现在时间戳+生存时间
 $douban_cache_content = array (
 'expired' => $expired,
 'data' => $douban_data
 );        //缓存内容格式
 $douban_cache_content = '<?php return ' . var_export($douban_cache_content, true) . ';';
 // 写入缓存
 file_put_contents($douban_cache_file_path, $douban_cache_content, LOCK_EX);
 
}
 
?>