PHP WeChat development of QR code generation Class _php Tutorial

PHP development of the QR code generation class

This article mainly introduces the PHP development of the two-dimensional code generation class, this article uses the interface to realize the generation of two-dimensional code, and directly to show the example code, the need for friends can refer to the next

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/**

* Created by Phpstorm.

* User:bin

* date:15-1-16

* Time: 9:48

*/

namespace Home\common;

Processing class

Set_time_limit (30);

Class weixin{

Construction method

static $qrcode _url = "Https://api.weixin.qq.com/cgi-bin/qrcode/create?";

static $token _url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&";

static $qrcode _get_url = "Https://mp.weixin.qq.com/cgi-bin/showqrcode?";

Generate two-dimensional code

Public Function Getewm ($wechatid, $fqid, $type = 1) {

$wechat = M (' member_public ')->where (array (' id ' = = $wechatid))->find ();

$appid = $wechat [' AppID '];

$secret = $wechat [' secret '];

$ACCESS _token = $this->gettoken ($appid, $secret);

$url = $this->getqrcodeurl ($ACCESS _token, $fqid, 1);

Return DOWNLOADQR ($url, Time ());

}

protected function Getqrcodeurl ($ACCESS _token, $fqid, $type = 1) {

$url = self:: $qrcode _url. ' access_token= '. $ACCESS _token;

if ($type = = 1) {

Generate a permanent QR code

$qrcode = ' {"Action_name": "Qr_limit_scene", "Action_info": {"SCENE": {"scene_id": '. $fqid. '}} ';

}else{

Generate a temporary QR code

$qrcode = ' {"expire_seconds": 1800, "Action_name": "Qr_scene", "Action_info": {"SCENE": {"scene_id": '. $fqid. '}} ';

}

$result = $this->http_post_data ($url, $qrcode);

$oo = Json_decode ($result [1]);

if (! $oo->ticket) {

$this->errorlogger (' Getqrcodeurl falied. Error Info:getqrcodeurl get failed ');

Exit ();

}

$url = self:: $qrcode _get_url. ' ticket= '. $oo->ticket. ';

return $url;

}

protected function GetToken ($appid, $secret) {

$ACCESS _token = file_get_contents (self:: $token _url. " appid= $appid &secret= $secret ");

$ACCESS _token = Json_decode ($ACCESS _token);

$ACCESS _token = $ACCESS _token->access_token;

return $ACCESS _token;

}

protected function Http_post_data ($url, $data _string) {

$ch = Curl_init ();

curl_setopt ($ch, Curlopt_post, 1);

curl_setopt ($ch, Curlopt_url, $url);

curl_setopt ($ch, Curlopt_postfields, $data _string);

curl_setopt ($ch, Curlopt_httpheader, Array (

' Content-type:application/json; Charset=utf-8 ',

' Content-length: '. strlen ($data _string))

);

Ob_start ();

Curl_exec ($ch);

if (Curl_errno ($ch)) {

$this->errorlogger (' Curl falied. Error Info: '. Curl_error ($ch));

}

$return _content = ob_get_contents ();

Ob_end_clean ();

$return _code = Curl_getinfo ($ch, Curlinfo_http_code);

Return Array ($return _code, $return _content);

}

Download QR code to server

protected function Downloadqr ($url, $filestring) {

if ($url = = "") {

return false;

}

$filename = $filestring. '. JPG ';

Ob_start ();

ReadFile ($url);

$img =ob_get_contents ();

Ob_end_clean ();

$size =strlen ($IMG);

$fp 2=fopen ('./uploads/qrcode/'. $filename, "a");

if (Fwrite ($fp 2, $img) = = = = False) {

$this->errorlogger (' dolwload image falied. Error Info: Unable to write picture ');

Exit ();

}

Fclose ($fp 2);

Return './uploads/qrcode/'. $filename;

}

Private Function Errorlogger ($ERRMSG) {

$logger = fopen ('./errorlog.txt ', ' A + ');

Fwrite ($logger, date (' y-m-d h:i:s '). " Error Info: ". $errMsg." \ r \ n ");

}

}

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