<?php

/**

* 微信公众号接口相关操作

*/

class WeChat

{

private $_appid;

private $_appsecret;

private $_token;

public function __construct($_appid,$_appsecret,$_token)

{

$this->_appid=$_appid;

$this->_appsecret=$_appsecret;

$this->_token=$_token;

}

//获得微信通信token

public function requestUrl($curl,$https=true,$method=‘GET‘,$data=null)

{

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $curl);

curl_setopt($ch, CURLOPT_HEADER, false);//这里不需要头信息只要内容

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

if($https){

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,false);//是否进行服务器主机验证

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,2);//是否进行https证书检查(2仅校验是否有CN字段)

}

if($method == ‘POST‘){

curl_setopt($ch, CURLOPT_POST, true);

curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

}

$content = curl_exec($ch);

curl_close($ch);

return $content;

}

//获取token

public function getAccessToken()

{

$file = ‘./wxaccesstoken.json‘;//保存到文件不用每次都请求接口

if(is_file($file)){

$content = file_get_contents($file);

$content = json_decode($content);

if(time() - filemtime($file) < $content->expires_in){

return $content->access_token;

}

}

$curl=‘https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=‘.$this->_appid.‘&secret=‘.$this->_appsecret;

$content = $this->requestUrl($curl);

file_put_contents($file, $content);

$content = json_decode($content);

return $content->access_token;

}

//获取ticket

public function getTicket($sceneid,$type=‘temp‘,$expire_seconds=604800)

{

if($type == ‘temp‘){//临时二维码

$data = ‘{"expire_seconds": %s, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": %s}}}‘;

$data = sprintf($data,$expire_seconds,$sceneid);

}else{//永久二维码

$data = ‘{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": %s}}}‘;

$data = sprintf($data,$sceneid);

}

$curl = ‘https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=‘.$this->getAccessToken();

$content = $this->requestUrl($curl,true,‘POST‘,$data);

$content = json_decode($content);

return $content->ticket;

}

//获取二微码

public function getQRCode($sceneid,$type=‘temp‘,$expire_seconds=604800){

$ticket = $this->getTicket($sceneid,$type,$expire_seconds);

$content = $this->requestUrl(‘https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=‘.urlencode($ticket));

return $content;

}

}

 

//公众账号测试接口可免费申请https://mp.weixin.qq.com/wiki (下面请自行修改)

$wechat = new wechat(‘wx487a542e3e7f3b84‘,‘5cddf41d16111222e321b48e213875b8‘,‘‘);

//1. 获得token

//echo $wechat->getAccessToken();

//2. 获得二维码

header(‘Content-type:image/jpeg‘);

echo $wechat->getQRCode(123);

 

?>