〔支付接入〕微信的 h5 支付和 jsapi 支付

<?php
// 生成32位的APIv3随机密钥
$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';

echo substr(str_shuffle($chars), 0, $length);

# 初始化文件夹
composer init

# 推荐使用 PHP 包管理工具 Composer 安装 SDK
composer require wechatpay/wechatpay

cd vendor/bin/

php CertificateDownloader.php -k 241xxxxxxxxxxxxxxxxx44 -m 1xxxxxxx1 -f ../../cert/merchant/apiclient_key.pem -s Wxxxxxxxxxxxxxxxx4 -o  ../../cert/wechatpay/

// 判断是否微信浏览器
function isWeChat() {
    var ua = navigator.userAgent.toLowerCase();
    if (ua.match(/MicroMessenger/i) == 'micromessenger') {
        return true;
    } else {
        return false;
    }
}

if(isWeChat()) {
    // 是微信中打开的产品页面
    alert('微信内不支持h5支付，请在外部浏览器打开页面');
} else {
    // 非微信内打开的产品页面，请求接口，获取支付的跳转链接
    // 前端用户选的产品，以及产品的金额，传一些参数过去
    let params = {
        total: 2, // 单位：元
        description: 'Image形象店-深圳腾大-QQ公仔' // 产品的介绍
        // ....更多入库参数
    };
    
    $.getJSON('后端接口地址/h5?' + $.param(params) + '&callback=?', function(res) {
        // 拉起微信支付界面，成功后会跳转到redirect_url链接
        $(location).attr("href", res.data.h5_url + "&redirect_url=" + encodeURIComponent(`https://xxxxxx/finish?out_trade_no=${res.data.out_trade_no}`))
    });
}

<?php
// 仅仅用作展示，不可直接复制使用
require_once('../vendor/autoload.php');

use WeChatPay\Builder;
use WeChatPay\Crypto\Rsa;
use WeChatPay\Util\PemUtil;

// 接受参数，相当于原生的$_GET
$input = $request->only(['name', 'total', 'description', 'phone']);

// 生成商户订单号
$out_trade_no = getOutTradeNo();

// 处理金额
// 由于微信使用的是分作为单位，所以前端传的是元的话，需要转换一下
$total = $input['total'] * 100;

// 商户号
$merchantId = '1xxxxxx1';

// 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名
$merchantPrivateKeyFilePath = 'file://../cert/merchant/apiclient_key.pem';
$merchantPrivateKeyInstance = Rsa::from($merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE);

// 「商户API证书」的「证书序列号」
$merchantCertificateSerial = '1xxxxxxxxxxxxxxxxxxxxx91';

// 从本地文件中加载「微信支付平台证书」，用来验证微信支付应答的签名
$platformCertificateFilePath = 'file://../cert/wechatpay/wechatpay_4xxxxxxxxxxxxxxxxxxx9.pem';
$platformPublicKeyInstance = Rsa::from($platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC);

// 从「微信支付平台证书」中获取「证书序列号」
$platformCertificateSerial = PemUtil::parseCertificateSerialNo($platformCertificateFilePath);

// 构造一个 APIv3 客户端实例
$instance = Builder::factory([
    'mchid'      => $merchantId,
    'serial'     => $merchantCertificateSerial,
    'privateKey' => $merchantPrivateKeyInstance,
    'certs'      => [
        $platformCertificateSerial => $platformPublicKeyInstance,
    ],
]);


try {
    $resp = $instance
        ->chain('v3/pay/transactions/h5')
        ->post(['json' => [
            'mchid'        => $merchantId, // 商户号
            'out_trade_no' => $out_trade_no, // 商户订单号
            'appid'        => '********换成跟商户号绑定的公众号APPID**********',
            'description'  => $input['description'], //商品描述
            'notify_url'   => 'https://xxxxx/notify', // 用户支付后的回调地址，在这里修改订单的状态
            'amount'       => [
                'total'    => $total, // 微信处理的单位是分
                'currency' => 'CNY'
            ],
            'scene_info' => [
                'payer_client_ip' => getClientIP(), // 有些框架有自带获取获取客户端IP
                'h5_info' => [
                    'type' => 'Wap'
                ]
            ]
        ]]);
        
        
   // 如果请求成功，需要将一些参数进行入库，这里仅作演示，非正式数据入库
   $response = Db::table('order')->insert([
       'name' => $input['name'],
       'description' => $input['description'],
       'total' => $input['total'],
       'phone' => $input['phone'],
       'trade_state' => 'START',
   ]);
   
   // 入库成功后，将跳转链接和订单号传给前端，前端拿到跳转地址跳转即可
   if($response) {
       return jsonp([
        'code' => 200,
        'msg' => '操作成功',
        'data' => [
              'out_trade_no' => $out_trade_no,
              'h5_url' => json_decode($resp->getBody(), true)['h5_url']
           ]
        ]);
   } else {
       return jsonp([
        'code' => 100,
        'msg' => '操作失败'
       ]);
   }
} catch (\Exception $e) {
    // 进行错误处理
    if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) {
        $r = $e->getResponse();
        echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL;
    }
}


// 生成唯一商户订单号，订单号不能超过32位，并且在同一个商户下订单号不能重复
// 如果并发不高，基本这样生成就可以，不会有重复的情况出现的
function getOutTradeNo()
{
    $out_trade_no = date('ymdHis') . mt_rand(1000, 9999) . uniqid();
    return mb_substr($out_trade_no, 0, 32);
}

// 获取客户端的IP
function getClientIP()
{
    if (@$_SERVER["HTTP_ALI_CDN_REAL_IP"]) {
        $ip = $_SERVER["HTTP_ALI_CDN_REAL_IP"];
    } elseif (@$_SERVER["HTTP_X_FORWARDED_FOR"] ?: false) {
        $ips = explode(',', $_SERVER["HTTP_X_FORWARDED_FOR"]);
        $ip = $ips[0];
    } elseif (@$_SERVER["HTTP_CDN_SRC_IP"] ?: false) {
        $ip = $_SERVER["HTTP_CDN_SRC_IP"];
    } elseif (getenv('HTTP_CLIENT_IP')) {
        $ip = getenv('HTTP_CLIENT_IP');
    } elseif (getenv('HTTP_X_FORWARDED')) {
        $ip = getenv('HTTP_X_FORWARDED');
    } elseif (getenv('HTTP_FORWARDED_FOR')) {
        $ip = getenv('HTTP_FORWARDED_FOR');
    } elseif (getenv('HTTP_FORWARDED')) {
        $ip = getenv('HTTP_FORWARDED');
    } else {
        $ip = $_SERVER['REMOTE_ADDR'];
    }

    $ip = str_replace(['::ffff:', '[', ']'], ['', '', ''], $ip);
    return $ip;
}

<?php
// 回调处理，当用户支付订单后，微信会请求该接口，也就是上面在notify_url中填写的接口
// 在这里我们可以修改订单的状态啥的
public function notify()
{
    // 获取参数
    $inBody = file_get_contents('php://input');

    // APIv3密钥
    $apiv3Key = 'xxxxxxxxxxxx';

    // 转换通知的JSON文本消息为PHP Array数组
    $inBodyArray = (array)json_decode($inBody, true);
    
    // 加密文本消息解密
    $inBodyResource = AesGcm::decrypt(
        $inBodyArray['resource']['ciphertext'],
        $apiv3Key,
        $inBodyArray['resource']['nonce'],
        $inBodyArray['resource']['associated_data']
    );

    // 把解密后的文本转换为PHP Array数组
    $inBodyResourceArray = (array)json_decode($inBodyResource, true);

    try {
        // 获取订单信息
        $order = Db::table('order')->where('out_trade_no', $inBodyResourceArray['out_trade_no'])->first();

        Db::startTrans();
        if ($order) {
            // 修改order订单的状态
            Db::table('order')->where('id', $order['id'])->update([
                'openid' => $inBodyResourceArray['payer']['openid'],
                'trade_state' => $inBodyResourceArray['trade_state']
            ]);
            
            
            Db::table('payment')->insert([
                 'out_trade_no' => $inBodyResourceArray['out_trade_no'],
                'transaction_id' => $inBodyResourceArray['transaction_id'],
                'trade_type' => $inBodyResourceArray['trade_type'],
                'trade_state' => $inBodyResourceArray['trade_state'],
                'trade_state_desc' => $inBodyResourceArray['trade_state_desc'],
                'total_amount' => $inBodyResourceArray['amount']['total'],
                'bank_type' => $inBodyResourceArray['bank_type'],
                'success_time' => strtotime($inBodyResourceArray['success_time'])
            ]);

            Db::commit();
        } else {
            Db::rollback();
        }
    } catch (\Exception $e) {
        Db::rollback();
    }
}

// a页面，仅做逻辑演示，更加具体的逻辑需要自己完善
// 判断是否微信浏览器
function isWeChat() {
    var ua = navigator.userAgent.toLowerCase();
    if (ua.match(/MicroMessenger/i) == 'micromessenger') {
        return true;
    } else {
        return false;
    }
}

if(!isWeChat()) {
    // 非微信内打开的产品页面
    alert('微信外不支持JSAPI支付，请在微信中打开页面');
    return false;
}

// 用户挑选完商品后跳转，这里appid需要上面跟商户绑定的公众号appid
// 微信授权分为静默授权和非静默授权，其中非静默授权，需要用户点击确认授权后，才可以获取code，
// 因为这里主打一个用户无感知，而且我们只需要openid即可，所以我们只需要使用静默授权即可
// 静默授权可以获取用户更多的信息，比如头像、昵称等，而静默授权只能获取openid，这点需要注意，具体情况选择不同
// 非静默授权
// $(location).attr('href', `https://open.weixin.qq.com/connect/oauth2/authorize?appid=xxxxxxxxxxx&redirect_uri=${encodeURIComponent('https://xxxx/b.html')}&response_type=code&scope=snsapi_userinfo#wechat_redirect`)
// 静默授权
$(location).attr('href', `https://open.weixin.qq.com/connect/oauth2/authorize?appid=xxxxxxxxxxx&redirect_uri=${encodeURIComponent('https://xxxx/b.html')}&response_type=code&scope=snsapi_base#wechat_redirect`)

// b页面，仅做逻辑演示，更加具体的逻辑需要自己完善
let openid = '';

// 获取code, 请求接口获取openid
function getParamUrl(name, url) {
  if (!url) url = location.href;
  if (url.indexOf('?') == -1) return '';

  try {
    var re = new RegExp("" + name + "=([^&?]*)", "ig");
    return ((url.match(re)) ? (decodeURIComponent(url.match(re)[0].substr(name.length + 1))) : '');
  } catch (_e) {
    return '';
  }
}

let code = getParamUrl('code');

$.getJSON('后端接口地址/openid?callback=?', function(res) {
    if(res.code == 200) {
        openid = res.data;
    } else {
        console.error(res.msg);
    }
})

// 用户确定订单后，拉起支付
let params = {
    total: 2, // 单位：元
    description: 'Image形象店-深圳腾大-QQ公仔', // 产品的介绍
    openid: openid //用户的openid
    // ....更多入库参数
};

$.getJSON('后端接口地址/jssapi?' + $.param(params) + '&callback=?', function(res) {
    WeixinJSBridge.invoke('getBrandWCPayRequest', {
      'appId': res.data.sign.appId,
      'timeStamp': res.data.sign.timeStamp,
      'nonceStr': res.data.sign.nonceStr,
      'package': res.data.sign.package,
      'signType': res.data.sign.signType,
      'paySign': res.data.sign.paySign
    }, function (response) {
      if (response.err_msg == "get_brand_wcpay_request:ok") {
        $(location).attr("href", `https://xxxxxx/finish?out_trade_no=${res.data.out_trade_no}`)
      } else {
        // 有些用户调起了支付，但是未付款取消的处理方式，你可以给他简单简单提示
        toast('支付异常取消')

        // 当然有些用户是误操作，你可以提醒二次支付
        if(confirm('检测到你操作有误，是否重新支付?')) {
            WeixinJSBridge.invoke('getBrandWCPayRequest', {
                  'appId': res.data.sign.appId,
                  'timeStamp': res.data.sign.timeStamp,
                  'nonceStr': res.data.sign.nonceStr,
                  'package': res.data.sign.package,
                  'signType': res.data.sign.signType,
                  'paySign': res.data.sign.paySign
                }, function (response) {
                if (response.err_msg == "get_brand_wcpay_request:ok") {
                    $(location).attr("href", `https://xxxxxx/finish?out_trade_no=${res.data.out_trade_no}`)
                }
            })
        }
      }
    });
});

<?php
// 获取用户的openid

$input = $request->only(['code']);

$response = getCurl("https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->appid}&secret={$this->secret}&code={$input['code']}&grant_type=authorization_code");

$openid = json_decode($response, true)['openid'];

// 返回openid
return jsonp([
    'code' => 200,
    'msg' => '获取成功',
    'data' => $openid
]);


// 封装的GET请求
function getCurl($url, $timeout = 5)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    $result = curl_exec($ch);
    curl_close($ch);

    return $result;
}

<?php
// 仅仅用作展示，不可直接复制使用
require_once('../vendor/autoload.php');

use WeChatPay\Builder;
use WeChatPay\Formatter;
use WeChatPay\Crypto\Rsa;
use WeChatPay\Util\PemUtil;

// 接受参数，相当于原生的$_GET，这里会比h5支付多一个openid
$input = $request->only(['openid', 'name', 'total', 'description', 'phone']);

// 生成商户订单号
$out_trade_no = getOutTradeNo();

// 处理金额
// 由于微信使用的是分作为单位，所以前端传的是元的话，需要转换一下
$total = $input['total'] * 100;

// 商户号
$merchantId = '1xxxxxx1';

// 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名
$merchantPrivateKeyFilePath = 'file://../cert/merchant/apiclient_key.pem';
$merchantPrivateKeyInstance = Rsa::from($merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE);

// 「商户API证书」的「证书序列号」
$merchantCertificateSerial = '1xxxxxxxxxxxxxxxxxxxxx91';

// 从本地文件中加载「微信支付平台证书」，用来验证微信支付应答的签名
$platformCertificateFilePath = 'file://../cert/wechatpay/wechatpay_4xxxxxxxxxxxxxxxxxxx9.pem';
$platformPublicKeyInstance = Rsa::from($platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC);

// 从「微信支付平台证书」中获取「证书序列号」
$platformCertificateSerial = PemUtil::parseCertificateSerialNo($platformCertificateFilePath);

// 构造一个 APIv3 客户端实例
$instance = Builder::factory([
    'mchid'      => $merchantId,
    'serial'     => $merchantCertificateSerial,
    'privateKey' => $merchantPrivateKeyInstance,
    'certs'      => [
        $platformCertificateSerial => $platformPublicKeyInstance,
    ],
]);


try {
    // 调用 transactions/jsapi 接口后会生成prepay_id
    $resp = $this->instance()
        ->chain('v3/pay/transactions/jsapi')
        ->post(['json' => [
            'mchid'        => $merchantId, // 商户号
            'out_trade_no' => $out_trade_no, // 商户订单号
            'appid'        => '********换成跟商户号绑定的公众号APPID**********',
            'description'  => $input['description'], //商品描述
            'notify_url'   => 'https://xxxxx/notify', // 用户支付后的回调地址，在这里修改订单的状态
            'amount' => [
                'total' => $total,
                'currency' => 'CNY'
            ],
            'payer' => [
                'openid' => $input['openid']
            ]
        ]]);
        
    // 需要根据prepay_id去生成加密的信息
    $prepay_id = json_decode($resp->getBody(), true)['prepay_id'];
    $sign = getSign($prepay_id);
        
   // 如果请求成功，需要将一些参数进行入库，这里仅作演示，非正式数据入库
   $response = Db::table('order')->insert([
       'openid' => $input['openid'],
       'name' => $input['name'],
       'description' => $input['description'],
       'total' => $input['total'],
       'phone' => $input['phone'],
       'trade_state' => 'START',
   ]);
   
   // 入库成功后，将跳转链接和订单号传给前端，前端拿到跳转地址跳转即可
   if($response) {
       return jsonp([
        'code' => 200,
        'msg' => '操作成功',
        'data' => [
              'out_trade_no' => $out_trade_no,
              'sign' => $sign
           ]
        ]);
   } else {
       return jsonp([
        'code' => 100,
        'msg' => '操作失败'
       ]);
   }
} catch (\Exception $e) {
    // 进行错误处理
    if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) {
        $r = $e->getResponse();
        echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL;
    }
}

// 获取加密参数
function getSign($prepay_id)
{
    $merchantPrivateKeyInstance = Rsa::from($this->merchantPrivateKeyFilePath);

    $params = [
        'appId' => $this->appid,
        'timeStamp' => (string)Formatter::timestamp(),
        'nonceStr' => Formatter::nonce(),
        'package' => 'prepay_id=' . $prepay_id,
    ];

    $params += ['paySign' => Rsa::sign(
        Formatter::joinedByLineFeed(...array_values($params)),
        $merchantPrivateKeyInstance
    ), 'signType' => 'RSA'];

    return $params;
}

<?php
/**
 * User: tinygeeker
 * Desc: 微信支付库封装
 * Date: 2023/08/10
 */

namespace App;

use App\Helper;
use WeChatPay\Builder;
use WeChatPay\Formatter;
use WeChatPay\Crypto\Rsa;
use WeChatPay\Util\PemUtil;

class WxPay
{
    // appid
    private $appid;

    // 商户号
    private $merchantId;

    // 商户API私钥
    private $merchantPrivateKeyFilePath;

    // 证书序列号
    private $merchantCertificateSerial;

    // 微信支付平台证书
    private $platformCertificateFilePath;

    /**
     * @param $appid
     * @param $merchantId
     * @param $merchantCertificateSerial
     */
    public function __construct($appid = '', $merchantId = '', $merchantCertificateSerial = '')
    {
        $this->appid = $appid ?: '换成自己的APPID';
        $this->merchantId = $merchantId ?: '换成自己的商户号';
        $this->merchantCertificateSerial = $merchantCertificateSerial ?: '换成自己的证书序列号';

        $this->merchantPrivateKeyFilePath = 'file:///common/cert/merchant/apiclient_key.pem'; // 换成自己的
        $this->platformCertificateFilePath = 'file:///common/cert/wechatpay/wechatpay_xxx.pem'; // 换成自己的
    }

    /**
     * @return \WeChatPay\BuilderChainable
     */
    protected function instance()
    {
        $merchantPrivateKeyInstance = Rsa::from($this->merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE);
        $platformPublicKeyInstance = Rsa::from($this->platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC);

        $platformCertificateSerial = PemUtil::parseCertificateSerialNo($this->platformCertificateFilePath);

        $instance = Builder::factory([
            'mchid' => $this->merchantId,
            'serial' => $this->merchantCertificateSerial,
            'privateKey' => $merchantPrivateKeyInstance,
            'certs' => [
                $platformCertificateSerial => $platformPublicKeyInstance,
            ],
        ]);

        return $instance;
    }

    public function getSign($prepay_id)
    {
        $merchantPrivateKeyInstance = Rsa::from($this->merchantPrivateKeyFilePath);

        $params = [
            'appId' => $this->appid,
            'timeStamp' => (string)Formatter::timestamp(),
            'nonceStr' => Formatter::nonce(),
            'package' => 'prepay_id=' . $prepay_id,
        ];

        $params += ['paySign' => Rsa::sign(
            Formatter::joinedByLineFeed(...array_values($params)),
            $merchantPrivateKeyInstance
        ), 'signType' => 'RSA'];

        return $params;
    }

    public function checkOutTradeNo($out_trade_no)
    {
        try {
            $resp = $this->instance()
                ->v3->pay->transactions->outTradeNo->_out_trade_no_
                ->get([
                    // Query 参数
                    'query' => ['mchid' => $this->merchantId],
                    // 变量名 => 变量值
                    'out_trade_no' => $out_trade_no,
                ]);

            return $resp->getBody();
        } catch (\Exception $e) {
            // 进行错误处理
            echo $e->getMessage(), PHP_EOL;
            if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) {
                $r = $e->getResponse();
                echo $r->getStatusCode() . ' ' . $r->getReasonPhrase(), PHP_EOL;
                echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL;
            }
            echo $e->getTraceAsString(), PHP_EOL;
        }
    }
    
    // h5下单
    public function h5($total, $out_trade_no, $description, $notify_url)
    {
        try {
            $resp = $this->instance()
                ->chain('v3/pay/transactions/h5')
                ->post(['json' => [
                    'mchid' => $this->merchantId,
                    'out_trade_no' => $out_trade_no,
                    'appid' => $this->appid,
                    'description' => $description,
                    'notify_url' => $notify_url,
                    'amount' => [
                        'total' => $total,
                        'currency' => 'CNY'
                    ],
                    'scene_info' => [
                        'payer_client_ip' => Helper::getClientIp(),
                        'h5_info' => [
                            'type' => 'Wap'
                        ]
                    ]
                ]]);

            return $resp->getBody();
        } catch (\Exception $e) {
            // 进行错误处理
            echo $e->getMessage(), PHP_EOL;
            if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) {
                $r = $e->getResponse();
                echo $r->getStatusCode() . ' ' . $r->getReasonPhrase(), PHP_EOL;
                echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL;
            }
            echo $e->getTraceAsString(), PHP_EOL;
        }
    }
    
    // jsapi下单
    public function jsapi($openid, $total, $out_trade_no, $description, $notify_url)
    {
        try {
            $resp = $this->instance()
                ->chain('v3/pay/transactions/jsapi')
                ->post(['json' => [
                    'mchid' => $this->merchantId,
                    'out_trade_no' => $out_trade_no,
                    'appid' => $this->appid,
                    'description' => $description,
                    'notify_url' => $notify_url,
                    'amount' => [
                        'total' => $total,
                        'currency' => 'CNY'
                    ],
                    'payer' => [
                        'openid' => $openid
                    ]
                ]]);

            return $resp->getBody();
        } catch (\Exception $e) {
            // 进行错误处理
            echo $e->getMessage(), PHP_EOL;
            if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) {
                $r = $e->getResponse();
                echo $r->getStatusCode() . ' ' . $r->getReasonPhrase(), PHP_EOL;
                echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL;
            }
            echo $e->getTraceAsString(), PHP_EOL;
        }
    }
    
    
   // todo... 更多接口可根据官方文档列表自行添加
}

<?php
/**
 * User: tinygeeker
 * Desc: 工具库
 * Date: 2023/08/10
 */
 
namespace App;

class Helper
{
    /**
     * @return array|mixed|string|string[]
     */
    static public function getClientIP()
    {
        if (@$_SERVER["HTTP_ALI_CDN_REAL_IP"]) {
            $ip = $_SERVER["HTTP_ALI_CDN_REAL_IP"];
        } elseif (@$_SERVER["HTTP_X_FORWARDED_FOR"] ?: false) {
            $ips = explode(',', $_SERVER["HTTP_X_FORWARDED_FOR"]);
            $ip = $ips[0];
        } elseif (@$_SERVER["HTTP_CDN_SRC_IP"] ?: false) {
            $ip = $_SERVER["HTTP_CDN_SRC_IP"];
        } elseif (getenv('HTTP_CLIENT_IP')) {
            $ip = getenv('HTTP_CLIENT_IP');
        } elseif (getenv('HTTP_X_FORWARDED')) {
            $ip = getenv('HTTP_X_FORWARDED');
        } elseif (getenv('HTTP_FORWARDED_FOR')) {
            $ip = getenv('HTTP_FORWARDED_FOR');
        } elseif (getenv('HTTP_FORWARDED')) {
            $ip = getenv('HTTP_FORWARDED');
        } else {
            $ip = $_SERVER['REMOTE_ADDR'];
        }

        $ip = str_replace(['::ffff:', '[', ']'], ['', '', ''], $ip);
        return $ip;
    }

    /**
     * @param $length
     * @param $type
     * @return false|string
     */
    static public function createRandomStr($length = 32, $type = 0)
    {
        switch ($type) {
            case 1:
                $chars = '0123456789';
                break;
            case 2:
                $chars = 'abcdefghijklmnopqrstuvwxyz';
                break;
            case 3:
                $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
                break;
            case 4:
                $chars = 'abcdefghijklmnopqrstuvwxyz0123456789';
                break;
            case 5:
                $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
                break;
            default:
                $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
                break;
        }

        return substr(str_shuffle($chars), 0, $length);
    }

    /**
     * @param $url
     * @param $timeout
     * @return bool|string
     */
    static public function getCurl($url, $timeout = 5)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        $result = curl_exec($ch);
        curl_close($ch);

        return $result;
    }

    /**
     * @param $url
     * @param $data
     * @param $header
     * @param $timeout
     * @return bool|string
     */
    static public function postCurl($url, $data, $header = [], $timeout = 5)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        if ($header) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        $result = curl_exec($ch);
        curl_close($ch);

        return $result;
    }
}