如何在php中并发查询Bittrex api

<?php
// 创建cURL多个句柄
$mh = curl_multi_init();

// 创建多个cURL请求
$urls = array(
    'https://api.bittrex.com/v3/markets/BTC-USDT/summary',
    'https://api.bittrex.com/v3/markets/ETH-USDT/summary',
    'https://api.bittrex.com/v3/markets/LTC-USDT/summary'
);

$handles = array();
foreach ($urls as $url) {
    $handle = curl_init($url);
    curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
    curl_multi_add_handle($mh, $handle);
    $handles[] = $handle;
}

// 执行所有请求
$running = null;
do {
    curl_multi_exec($mh, $running);
} while ($running > 0);

// 获取所有请求的响应
$responses = array();
foreach ($handles as $handle) {
    $responses[] = curl_multi_getcontent($handle);
    curl_multi_remove_handle($mh, $handle);
}

// 关闭cURL多个句柄
curl_multi_close($mh);

// 处理响应数据
foreach ($responses as $response) {
    // 处理每个请求的响应数据
    echo $response . "\n";
}
?>

<?php
require 'vendor/autoload.php';

use GuzzleHttp\Client;
use GuzzleHttp\Promise;

// 创建Guzzle HTTP客户端
$client = new Client();

// 创建多个并发请求
$urls = array(
    'https://api.bittrex.com/v3/markets/BTC-USDT/summary',
    'https://api.bittrex.com/v3/markets/ETH-USDT/summary',
    'https://api.bittrex.com/v3/markets/LTC-USDT/summary'
);

$promises = array();
foreach ($urls as $url) {
    $promises[] = $client->getAsync($url);
}

// 执行所有请求
$responses = Promise\unwrap($promises);

// 处理响应数据
foreach ($responses as $response) {
    // 处理每个请求的响应数据
    echo $response->getBody() . "\n";
}
?>