<?php
/*
* 微信授權第三方應用平臺
*/
class Authorize
{
private $component_appid; //微信第三方應用平臺appid
private $component_secret; //微信第三方應用平臺appsecret
private $component_token; //微信第三方應用平臺消息檢驗token
private $component_key; //微信第三方應用平臺消息加解密key
public function __construct($component_appid,$component_secret,$component_token,$component_key)
{
$this->component_appid = $component_appid;
$this->component_secret = $component_secret;
$this->component_token = $component_token;
$this->component_key = $component_key;
}
/*
*微信公衆號/小程序授權給第三方應用平臺
*@params string $redirect_url : 授權後的回調地址
*@params string $ticket : component_verify_ticket值
*@params int $auth_type : 授權類型，1公衆號，2小程序
*return string $auth_url : 授權鏈接
*/
public function start_authorization($redirect_uri,$ticket,$auth_type)
{
$component_access_token = $this->get_component_access_token($ticket);
$pre_auth_code = $this->get_pre_auth_code($component_access_token);
return "https://mp.weixin.qq.com/cgi-bin/componentloginpage?component_appid=".$this->component_appid."&pre_auth_code=".$pre_auth_code."&redirect_uri=".urlencode($redirect_uri)."&auth_type=".$auth_type;
}
/*
*接收微信消息自身推送事件，如：公衆號/小程序取消授權，ticket值等
*解密ticket值/AuthorizerAppid
*對應的URL鏈接在微信應用第三方平臺中填寫的“授權事件接收URL”
*/
public function receiveMsg()
{
require_once('crypt/wxBizMsgCrypt.php');
$encryptMsg = isset($GLOBALS["HTTP_RAW_POST_DATA"]) ? $GLOBALS['HTTP_RAW_POST_DATA'] : file_get_contents("php://input");
$xml_tree = new \DOMDocument();
$xml_tree->loadXML($encryptMsg);
$xml_array = $xml_tree->getElementsByTagName("Encrypt");
$encrypt = $xml_array->item(0)->nodeValue;
$Prpcrypt = new \Prpcrypt($this->component_key);
$postData = $Prpcrypt->decrypt($encrypt, $this->component_appid);
if($postData[0] != 0){
return $postData[0];
} else {
$xml = new \DOMDocument();
$xml->loadXML($postData[1]);
$array_a = $xml->getElementsByTagName("InfoType");
$infoType = $array_a->item(0)->nodeValue;
//取消授權
if($infoType == 'unauthorized') {
$array_b = $xml->getElementsByTagName("AuthorizerAppid");
$AuthorizerAppid = $array_b->item(0)->nodeValue;
}
//ticket值
elseif($infoType == 'component_verify_ticket') {
$array_e = $xml->getElementsByTagName("ComponentVerifyTicket");
$component_verify_ticket = $array_e->item(0)->nodeValue;
}
}
}
/*
*獲取微信第三方應用平臺componet_access_token
*@params string $component_ticket : 第三方應用平臺ticket值（每10分鐘微信後臺將推送該值）
*return string $compoent_access_token : 第三方應用平臺access_token
*/
private function get_component_access_token($component_verify_ticket)
{
$json = json_decode(file_get_contents('component_access_token.json'));
if(isset($json->component_access_token) && !empty($json->component_access_token) && ($json->expires_in < time()) ){
return $json->component_access_token;
} else {
$url = "https://api.weixin.qq.com/cgi-bin/component/api_component_token";
$data = '{"component_appid":"'.$this->component_appid.'","component_appsecret":"'.$this->component_secret.'","component_verify_ticket":"'.$component_verify_ticket.'"}';
$ret = json_decode($this->https_post($url,$data));
if(isset($ret->component_access_token)) {
$json = '{"component_access_token":"'.$ret->component_access_token.'","expires_in":"'.(time() + $ret->expires_in).'"}';
file_put_contents('component_access_token.json',$json);
return $ret->component_access_token;
} else {
return null;
}
}
}
/*
*獲取預授權碼pre_auth_code
*@params string $component_access_token : 第三方應用平臺access_token
*return json $ret : 返回pre_auth_code、expires_in
*/
private function get_pre_auth_code($component_access_token)
{
$json = json_decode(file_get_contents('pre_auth_code.json'));
if(isset($json->pre_auth_code) && !empty($json->pre_auth_code) && ($json->expires_in < time()) ){
return $json->pre_auth_code;
} else {
$url = "https://api.weixin.qq.com/cgi-bin/component/api_create_preauthcode?component_access_token=".$component_access_token;
$data = '{"component_appid":"'.$this->component_appid.'"}';
$ret = json_decode($this->https_post($url,$data));
if(isset($ret->pre_auth_code)) {
$json = '{"pre_auth_code":"'.$ret->pre_auth_code.'","expires_in":"'.(time() + $ret->expires_in).'"}';
file_put_contents('pre_auth_code.json',$json);
return $ret->pre_auth_code;
} else {
return null;
}
}
}
/*
*發送https_post請求
*@params string $url : URL鏈接
*@params json $data : 發送JSON數據
*return json $ret : 返回請求的結果
*/
private function https_post($url,$data)
{
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
if (!empty($data)){
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
}
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($curl);
curl_close($curl);
return $output;
}
/*
*發送https_get請求
*@params string $url : URL鏈接
*return json $ret : 返回請求的結果
*/
private function https_get($url)
{
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($curl, CURLOPT_HEADER, FALSE) ;
curl_setopt($curl, CURLOPT_TIMEOUT,60);
if (curl_errno($curl)) {
return 'Errno'.curl_error($curl);
}
else{$result=curl_exec($curl);}
curl_close($curl);
return $result;
}
}
$link = mysqli_connect('localhost','root','root','weixin');
$sql = " select `appId`,`appSecret`,`token`,`encodingAesKey`,`component_verify_ticket`,`component_access_token` from `weixin` where `type` = 1 ";
$result = mysqli_query($link,$sql);
$component = [];
while ($row = mysqli_fetch_assoc($result)) {
$component['appid'] = $row['appId'];
$component['secret'] = $row['appSecret'];
$component['token'] = $row['token'];
$component['key'] = $row['encodingAesKey'];
$component['ticket'] = $row['component_verify_ticket'];
$component['component_access_token'] = $row['component_access_token'];
}
$authorize = new Authorize($component['appid'],$component['secret'],$component['token'],$component['key']);
$auth_url = $authorize->start_authorization('http://www.baidu.com/user/authorize_back.html',$component['ticket'],1);
echo '<a href="'.$auth_url.'">'.$auth_url.'</a>';
?>crypt爲微信官方消息解密demo包，下載地址：https://wximg.gtimg.com/shake...
