php小程序生成二维码

<?php

getwxacode();

//生成二维码    function getwxacode(){        $url = "https://api.weixin.qq.com/wxa/getwxacode?";        $url .= "access_token=" . getToken();        $postdata = [            "path" => "pages/index/index?clientId=3",            "width" => 430,        ];

$res = curl_post($url,json_encode($postdata),$options=array());        $img = ‘./img/‘.time().‘.jpg‘;        $r = file_put_contents($img,$res);        echo "<img src=‘".$img."‘>";

}

//发送获取token请求,获取token(2小时)    function getToken() {        $url = getTokenUrlStr();        $res = curl_post($url,$postdata=‘‘,$options=array());

$data = json_decode($res,JSON_FORCE_OBJECT);        return $data[‘access_token‘];    }

//获取token的url参数拼接    function getTokenUrlStr()    {        $getTokenUrl = "https://api.weixin.qq.com/cgi-bin/token?"; //获取token的url        $WXappid     =  "wx0399845015067c51"; //APPID        $WXsecret    = "7d7205f85b79805006ecfa2121ef4272"; //secret        $str  = $getTokenUrl;        $str .= "grant_type=client_credential&";        $str .= "appid=" . $WXappid . "&";        $str .= "secret=" . $WXsecret;

return $str;    }

function curl_post($url=‘‘,$postdata=‘‘,$options=array()){        $ch=curl_init($url);        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);        curl_setopt($ch,CURLOPT_POST,1);        curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);        curl_setopt($ch, CURLOPT_TIMEOUT, 5);        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);        if(!empty($options)){            curl_setopt_array($ch, $options);        }        $data=curl_exec($ch);        curl_close($ch);        return $data;    }

function curl_get($url=‘‘,$options=array()){        $ch=curl_init($url);        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);        curl_setopt($ch,CURLOPT_TIMEOUT,5);        if(!empty($options)){            curl_setopt_array($ch,$options);        }        $data=curl_exec($ch);        curl_close($ch);        return $data;    }

原文地址：https://www.cnblogs.com/cqlb/p/9561376.html