/**
* 新增永久素材 媒体文件类型别有图片（image）、语音（voice) 、视频（video）和缩略图（thumb）
*
* @param string $filename
* @param string $type
* @param string $title 视频素材的标题 只对类型为video有效
* @param string $introduction 视频素材的描述 只对类型为video有效
* @return array
*/
public static function uploadFile($filename, $type, $title = null, $introduction = null)
{
$filename = realpath($filename);
if (class_exists('\\CURLFile')) {
$data['media'] = new \CURLFile($filename);
} else {
$data['media'] = '@' . $filename;
}
$data['type'] = $type;
if ($type === 'video') {
$data['description'] = Json::encode(array('title' => $title, 'introduction' => $introduction));
}
$url = 'https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=ACCESS_TOKEN';
return parent::request($url, $data, false);
}
/**
* 请求微信平台服务器，并解析返回的json字符串为数组，失败抛异常
* @param $url
* @param $data
* @return array
* @throws \PFinal\Wechat\WechatException
*/
protected static function request($url, $data = null, $jsonEncode = true)
{
$executeUrl = str_replace('ACCESS_TOKEN', self::getApi()->getAccessToken(), $url);
if ($jsonEncode) {
$data = Json::encode($data);
}
try {
return Json::parseOrFail(Curl::execute($executeUrl, is_null($data) ? 'get' : 'post', $data));
} catch (WechatException $ex) {
//更新AccessToken再次请求
if ($ex->getCode() == 40001) {
$executeUrl = str_replace('ACCESS_TOKEN', self::getApi()->getAccessToken(false), $url);
return Json::parseOrFail(Curl::execute($executeUrl, is_null($data) ? 'get' : 'post', $data));
}
throw $ex;
}
}
/**
* 获取公众号的全局唯一票据accessToken，公众号主动调用各接口时都需使用accessToken
* accessToken默认有效时间为7200秒，每天调用次数有限制，认证服务号每天最多100000次
*
* @param bool $useCache 是否使用缓存
* @return string|null
*/
public function getAccessToken($useCache = true)
{
//缓存key
$cacheKey = md5(__FILE__ . __METHOD__ . $this->appId);
//检查是否启用缓存
if ($useCache) {
if (empty($this->accessToken)) {
$this->accessToken = Cache::get($cacheKey);
}
if (!empty($this->accessToken)) {
return $this->accessToken;
}
} else {
$this->accessToken = null;
Cache::delete($cacheKey);
}
//获取accessToken
$url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s';
$response = Curl::get(sprintf($url, $this->appId, $this->appSecret));
//返回格式 {"access_token":"ACCESS_TOKEN","expires_in":7200}
//{"access_token":"43BKbLBjBnwH600H5TMSlx6AKT9TCZ3BRXjxvT0erRpzHTIaUuaJBDUoUykTqA","expires_in":7200}
//每日调用超过次数，将提示
//{"errcode":45009,"errmsg":"reach max api daily quota limit hint: [PuguNA0618vr22]"}
$arr = Json::parseOrFail($response);
$this->accessToken = $arr['access_token'];
//默认时间是7200秒(120分钟)
$expires = $arr['expires_in'] - 1200;
if ($expires > 0) {
Cache::set($cacheKey, $this->accessToken, $expires);
}
return $this->accessToken;
}
