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wechat.php
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wechat.php
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<?php
define('WX_APPID','');
define('WX_APPSECRET','');
define('WX_KEY','weixin_uid');
require( dirname(__FILE__) . '/../../../wp-load.php' );
function wechat_oauth_redirect(){
$url = home_url();
wp_redirect( $url );
exit;
}
function get_wechat_access_token( $code = null ){
$code = $code ? $code : $_GET['code'];
$url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . WX_APPID . '&secret=' . WX_APPSECRET . '&code=' . $code . '&grant_type=authorization_code';
return json_decode(file_get_contents($url),true);
}
function wechat_oauth(){
if(!isset($_GET['code'])) wp_die('code empty.');
$code = $_GET['code'];
$json_token = get_wechat_access_token( $code );
$info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $json_token['access_token'] . '&openid=' . $json_token['openid'];
$user_info = json_decode(file_get_contents($info_url),true);
$weixin_id = $user_info['openid'];
if(!$weixin_id) wp_die('授权时发生错误');
if(is_user_logged_in()){
$this_user = wp_get_current_user();
update_user_meta($this_user->ID ,WX_KEY,$weixin_id);
update_user_meta($this_user->ID ,'weixin_avatar',$user_info['headimgurl']);
wechat_oauth_redirect();
}else{
$oauth_user = get_users(array('meta_key'=>WX_KEY,'meta_value'=>$weixin_id));
if(is_wp_error($oauth_user) || !count($oauth_user)){
$username = $user_info['nickname'];
$login_name = 'wx' . wp_create_nonce($weixin_id);
$random_password = wp_generate_password( $length=12, $include_standard_special_chars=false );
$userdata=array(
'user_login' => $login_name,
'display_name' => $username,
'user_pass' => $random_password,
'nickname' => $username
);
$user_id = wp_insert_user( $userdata );
wp_signon(array('user_login'=>$login_name,'user_password'=>$random_password),false);
update_user_meta($user_id ,WX_KEY,$weixin_id);
update_user_meta($user_id ,'weixin_avatar',$user_info['headimgurl']);
wechat_oauth_redirect();
}else{
wp_set_auth_cookie($oauth_user[0]->ID);
wechat_oauth_redirect();
}
}
}
if (isset($_GET['code'])){
wechat_oauth();
}
function wechat_oauth_url(){
$_SESSION ['state'] = md5 ( uniqid ( rand (), true ) );
$appkey = '';
$url = 'https://open.weixin.qq.com/connect/qrconnect?appid='. WX_APPID .'&redirect_uri='. urlencode (get_template_directory_uri() . '/' ) .'wechat.php&response_type=code&scope=snsapi_login&state=' . $_SESSION ['state'] . '#wechat_redirect';
return $url;
}
echo wechat_oauth_url();