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public function GetOpenid()

{

//通過code獲取openid

if (!isset($_GET['code'])){

//觸發(fā)微信返回碼

$baseUrl = urlencode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'].$_SERVER['QUERY_STRING ']);

$url = $this->_CreateOauthUrlForCode($baseUrl);

標頭("位置：$url");

exit();

} else {

//獲取code碼，以獲取openid

? ? $code = $_GET['code'];

$openid = $this->getOpenidFromMp($code);

return $openid;

}

}

?*/

私有函數 __CreateOauthUrlForOpenid($code)

{

$config = new WxPayConfig();

$urlObj["appid"] = $config- >GetAppId();

$urlObj["secret"] = $config->GetAppSecret();

$urlObj["js_code"] = $code;

$urlObj["grant_type"] = "authorization_code";

$bizString = $this->ToUrlParams($urlObj);

return "https://api.weixin. qq.com/sns/jscode2session?".$bizString;

//返回 "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;

}

公共函數 GetOpenidFromMp($code)

{

$url = $this->__CreateOauthUrlForOpenid($code);

//初始化curl

$ch = curl_init();

$curlVersion = curl_version();

$config = new WxPayConfig();

$ua = "WXPaySDK/3.0.9 (".PHP_OS.") PHP/".PHP_VERSION." CURL/".$curlVersion['版本']." "

.$config->GetMerchantId();

//設置超時

curl_setopt($ch, CURLOPT_TIMEOUT, $this-> ;curl_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_USERAGENT, $ua);

curl_setopt($ch, CURLOPT_HEADER, FALSE);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE );