各位好，我最近在对接Bybit API V5，想拉取自己的交易历史，但遇到了个棘手的问题：调用交易历史接口一直返回空列表，可是调用钱包余额的接口却完全正常。

我写了下面这段PHP代码，getBybitWalletBalance函数能顺利拿到钱包数据，但getBybitTradeHistory函数不管传哪个分类参数（比如我试了linear），返回结果里的list都是空数组。我上个月明明在BTCUSDT永续合约有过交易，而且换了其他分类参数测试，结果也一样是空的。

我的代码如下：

<?php 
$apiKey = '...';
$apiSecret = '...';
$window = "5000";

// Global function
function bybitSignature($method, $path, $query, $body) {
    global $apiKey, $apiSecret, $window;
    $timestamp = round(microtime(true) * 1000);
    if($method === "GET") {
        return hash_hmac("sha256", $timestamp . $apiKey . $window . $query, $apiSecret);
    } else {
        return hash_hmac("sha256", $timestamp . $apiKey . $window . $body, $apiSecret);
    }
}

function bybitCurl($url, $signature) {
    global $apiKey, $window;
    $timestamp = round(microtime(true) * 1000);
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        "Accept: application/json",
        "X-BAPI-API-KEY: " . $apiKey,
        "X-BAPI-TIMESTAMP: " . $timestamp,
        "X-BAPI-SIGN: " . $signature,
        "X-BAPI-RECV-WINDOW: " . $window
    ));
    if(curl_errno($ch)) {
        return curl_error($ch);
    } else {
        return curl_exec($ch);
    }
    curl_close($ch);
}

// Trade function
function getBybitTradeHistory($category) {
    return bybitCurl("https://api.bybit.com/v5/execution/list?category=" . $category, bybitSignature("GET", "/v5/execution/list", "category=" . $category, ""));
}

// Account function
function getBybitWalletBalance($accountType) {
    return bybitCurl("https://api.bybit.com/v5/account/wallet-balance?accountType=" . $accountType, bybitSignature("GET", "/v5/account/wallet-balance", "accountType=" . $accountType, ""));
}

var_dump(json_decode(getBybitTradeHistory("linear"), true)); 
?>

调用getBybitTradeHistory("linear")后的输出结果：

array(5) {
  ["retCode"]=>
  int(0)
  ["retMsg"]=>
  string(2) "OK"
  ["result"]=>
  array(3) {
    ["nextPageCursor"]=>
    string(0) ""
    ["category"]=>
    string(6) "linear"
    ["list"]=>
    array(0) {
    }
  }
  ["retExtInfo"]=>
  array(0) {
  }
  ["time"]=>
  int(1751725711326)
}

有没有朋友遇到过类似的问题？或者能帮我看看代码哪里可能出问题了吗？

内容来源于stack exchange