微信支付Notice: Use of undefined constant CURLOP_TIMEOUT - assumed

public function GetOpenidFromMp($code)
{
$url = $this->__CreateOauthUrlForOpenid($code);
//初始化curl
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOPT_TIMEOUT, 30);//这里少了个T【CURLOP_TIMEOUT , CURLOPT_TIMEOUT】
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,FALSE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
if(WxPayConfig::CURL_PROXY_HOST != "0.0.0.0"
&& WxPayConfig::CURL_PROXY_PORT != 0){
curl_setopt($ch,CURLOPT_PROXY, WxPayConfig::CURL_PROXY_HOST);
curl_setopt($ch,CURLOPT_PROXYPORT, WxPayConfig::CURL_PROXY_PORT);
}
//运行curl，结果以jason形式返回
$res = curl_exec($ch);
curl_close($ch);
//取出openid
$data = json_decode($res,true);
$this->data = $data;
$openid = $data['openid'];
return $openid;
}