/**
* 下载一个素材
* @param string $mediaId 媒体id,通过上传获得
* @param string $toFile 可选,下载到文件的绝对路径,不填则默认路径为RES_ROOT/$mediaId
* @return integer 下载到的文件大小(失败时返回false)
* @throws ApiException
*/
public function download($mediaId, $toFile = null)
{
//使用http协议
// $this->url = str_replace('https', 'http', $this->url);
$url = $this->url . '/get?access_token=' . $this->accessToken . '&media_id=' . $mediaId;
$httpClient = new HttpClient($url);
$httpClient->get(30);
if ($httpClient->getStatus() != 200 || $httpClient->getResponse() == '') {
throw ApiException::throws(ApiException::HTTP_ERROR_CODE, 'status code: ' . $httpClient->getStatus());
return false;
}
$header = $httpClient->getHeader();
$contentType = $header['Content-Type'][0];
//Content-Type为text/时表示带有errcode错误信息
if (!isset($header['Content-Type']) || stripos($contentType, 'text') !== false) {
$result = json_decode($httpClient->getResponse(), true);
if (!$result) {
throw ApiException::throws(ApiException::JSON_DECODE_ERROR_CODE, 'response: ' . $httpClient->getResponse());
}
if (isset($result['errcode']) && $result['errcode'] != 0) {
throw new ApiException($result['errmsg'], $result['errcode']);
//非0状态码
}
return false;
}
//写入文件
if (empty($toFile)) {
if (!is_dir(RES_ROOT . '/media')) {
mkdir(RES_ROOT . '/media');
chmod(RES_ROOT . '/media', 0775);
}
$toFile = RES_ROOT . "/media/{$mediaId}" . $this->parseExtension($contentType);
}
file_put_contents($toFile, $httpClient->getResponse());
return filesize($toFile);
}
