<?php
    
    function generateSignature($params, $secret) {
      // 将密钥（appSecret）添加到参数中
      $params['appSecret'] = $secret;
      
      // 按键名排序
      ksort($params);
    
      // 构建签名字符串
      $signatureBase = http_build_query($params, '', '&');
    
      // 使用MD5加密
      $signature = md5($signatureBase);
      return $signature;
    }
    
    // 示例参数
    $params = [
      'name' => '小龙',
      'age' => '42',
      'timestamp' => '1704038400000',
      'appKey' => '100088'
    ];
    
    // 生成数字签名
    $secret = '544bc1cfce21xz04fff65477ca7a0d17';
    $signature = generateSignature($params, $secret);
    // appSecret为商户密钥，签名后需移除，不做为参数提交
    unset($params['appSecret']);
    echo "Generated Signature: " . $signature;
    ?>
    

    import hashlib
    from collections import OrderedDict
    
    def generate_signature(params, secret):
        # 将密钥（appSecret）添加到参数中
        params['appSecret'] = secret
        
        # 按键名排序
        sorted_params = OrderedDict(sorted(params.items()))
    
        # 构建签名字符串
        signature_base = '&'.join(f"{key}={value}" for key, value in sorted_params.items())
        
        # 使用MD5加密
        signature = hashlib.md5(signature_base.encode('utf-8')).hexdigest()
        return signature
    
    # 示例参数
    params = {
        'name': '小龙',
        'age': '42',
        'timestamp': '1704038400000',
        'appKey': '100088'
    }
    
    # 生成数字签名
    secret = '544bc1cfce21xz04fff65477ca7a0d17'
    signature = generate_signature(params, secret)
    // appSecret为商户密钥，签名后需移除，不做为参数提交
    del params['appSecret']
    print("Generated Signature:", signature)

    package main
    
    import (
    	"crypto/md5"
    	"encoding/hex"
    	"fmt"
    	"sort"
    	"strings"
    )
    
    func generateSignature(params map[string]string, secret string) string {
    	// 将密钥（appSecret）添加到参数中
    	params["appSecret"] = secret
    
    	// 获取所有键，并按自然顺序排序
    	keys := make([]string, 0, len(params))
    	for k := range params {
    		keys = append(keys, k)
    	}
    	sort.Strings(keys)
    
    	// 构建签名字符串
    	var signatureBase strings.Builder
    	for _, k := range keys {
    		signatureBase.WriteString(k)
    		signatureBase.WriteString("=")
    		signatureBase.WriteString(params[k])
    		signatureBase.WriteString("&")
    	}
    
    	// 移除最后一个"&"
    	signatureStr := signatureBase.String()
    	signatureStr = signatureStr[:len(signatureStr)-1]
    
    	// 使用MD5加密
    	hasher := md5.New()
    	hasher.Write([]byte(signatureStr))
    	signature := hex.EncodeToString(hasher.Sum(nil))
    	return signature
    }
    
    func main() {
    	// 示例参数
    	params := map[string]string{
    		"name":      "小龙",
    		"age":       "42",
    		"timestamp": "1704038400000",
    		"appKey":    "100088",
    	}
    
    	// 生成数字签名
    	secret := "544bc1cfce21xz04fff65477ca7a0d17"
    	signature := generateSignature(params, secret)
        // appSecret为商户密钥，签名后需移除，不做为参数提交
        delete(params,"appSecret")
    	fmt.Println("Generated Signature:", signature)
    }