Attachment.class.php
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<?php
/**
* Attachment.php
* 附件操作类
* @author Deepseath
* @version $Id$
* @copyright vchangyi.com
*/
namespace Com;
use VcySDK\Attach;
use VcySDK\Service as VcySDKService;
class Attachment
{
/**
* 文件类型：图片
*/
const FILE_TYPE_IMAGE = 1;
/**
* 文件类型：语音
*/
const FILE_TYPE_VOICE = 2;
/**
* VcySDK 附件操作类
*/
protected $_attach = null;
/**
* 构造方法
*/
public function __construct()
{
$serv = &VcySDKService::instance();
$this->_attach = new Attach($serv);
}
/**
* 实例化
*
* @return \Com\Attachment
*/
public static function &instance()
{
static $instance;
if (empty($instance)) {
$instance = new self();
}
return $instance;
}
/**
* 上传图片
*
* @param string $uid 用户 ID
* @param string $wxMid 微信文件 ID
* @return array
*/
public function uploadImage($uid, $wxMid)
{
$params = array(
'memUid' => $uid,
'mediaId' => $wxMid,
'fileType' => self::FILE_TYPE_IMAGE
);
return $this->_attach->getMedia($params);
}
/**
* 上传语音
*
* @param string $uid 用户 ID
* @param string $wxMid 微信文件 ID
* @param string $callback 回调地址
* @return boolean
*/
public function uploadVoice($uid, $wxMid, $callback)
{
$params = array(
'memUid' => $uid,
'mediaId' => $wxMid,
'fileType' => self::FILE_TYPE_VOICE,
'callbackUrl' => $callback
);
return $this->_attach->getMedia($params);
}
/**
* 根据附件 ID 获取附件 Url
*
* @param string $atId 附件 ID
* @return string
*/
public function getAttachUrl($aid)
{
$result = $this->_attach->fetch(array('atId' => $aid));
return $result['atAttachment'];
}
/**
* 根据附件 ID 获取附件信息
*
* @param string $aid 附件ID
* @return string
*/
public function getAttachDetail($aid)
{
return $this->_attach->fetch(array('atId' => $aid));
}
/**
* 根据附件 ID 数组获取附件 Url
* @param array $aids 附件ID数组
* @return array
*/
public function listAttachUrl($aids)
{
$aids = settype($aids, 'array');
// 查询SDK
$result = $this->_attach->listAll(['atIds' => $aids]);
if (empty($result)) {
return [];
}
return array_combine_by_key($result, 'atId');
}
/**
* 下载附件文件
* @param string $atId 附件 ID
* @return boolean
*/
public function downloadAttachmentByAid($atId = '')
{
// 获取附件的详细信息
$attachDetail = $this->getAttachDetail($atId);
if (empty($attachDetail)) {
return false;
}
// 附件原始文件名，转换编码为 GBK
$showname = iconv('UTF-8', 'GBK//IGNORE', $attachDetail['atFilename']);
// 发送 Http Header 信息 开始下载
header('Pragma: public');
header('Cache-control: max-age=' . 180);
// header('Cache-Control: no-store, no-cache, must-revalidate');
header('Expires: ' . gmdate('D, d M Y H:i:s', NOW_TIME + 86400 * 7) . 'GMT');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $attachDetail['atCreated']) . 'GMT');
header('Content-Disposition: attachment; filename=' . $showname);
header('Content-Length: ' . $attachDetail['atFilesize']);
header('Content-type: application/octet-stream');
header('Content-Encoding: none');
header('Content-Transfer-Encoding: binary');
// 读取远程文件输出
readfile($attachDetail['atAttachment']);
exit();
}
}