记录今天学习到的 --- 如何获取微信access_token及微信二维码ticket。

借用了 appid和appsecret

$appId = trim('appid');
$appSecret =trim('secret');
$access_token = get_weixin_token($appId,$appSecret);

// print_r($access_token);
//生成临时二维码
$qr_Scene = '{"expire_seconds": 604800, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": 10000}}}';
$qrcode_url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token={$access_token}";
$result = postData($qrcode_url,$qr_Scene);
$jsoninfo = json_decode($result,true);
$ticket = $jsoninfo['ticket'];
// $ticket = urlencode($ticket);
$get_img = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket={$ticket}";
$qrcode_img = file_get_contents($get_img);
// print_r($ticket);
// print $qrcode_img;
//打印出图片
// header('Content-type: image/jpeg');
// echo $qrcode_img;

$filename = './qrcode/qrcode.jpg';
$local_file = fopen($filename,'w');
$imageInfo = downloadImageFromWeixin($get_img);
if(false !== $local_file){
if(false !== fwrite($local_file,$imageInfo['body'])){
fclose($local_file);
}
}

//获取access_token,get方式 file_get_connects($url).
function get_weixin_token($appId,$appSecret){

$url = "https://api.weixin.qq.com/cgi-bin/token?
grant_type=client_credential&appid={$appId}&secret={$appSecret}";
$return = file_get_contents($url);
$return = json_decode($return);
$access_token = $return -> access_token;

// echo $access_token;exit;
return $access_token;

}

//post方式生成临时二维码
function postData($url, $data = null)
{
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
// curl_setopt($curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
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;
}

//将图片数据保存为一个文件
function downloadImageFromWeixin($url){
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_HEADER);
curl_setopt($ch,CURLOPT_NOBODY);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
$package = curl_exec($ch);
$httpinfo = curl_getinfo($ch);
curl_close($ch);
return array_merge(array('body'=>$package),array('header'=>$httpinfo));
}