如何在PHP中创建异步HTTP请求

composer require guzzlehttp/guzzle

require 'vendor/autoload.php';

use GuzzleHttp\Client;
use GuzzleHttp\Promise\Utils;

$client = new Client(['base_uri' => 'https://api.example.com']);

// 创建一个Promise对象
$promises = [
    $client->getAsync('/endpoint1'),
    $client->getAsync('/endpoint2'),
];

// 等待所有请求完成
$results = Utils::unwrap($promises);

// 处理结果
foreach ($results as $result) {
    echo $result->getBody() . PHP_EOL;
}

$ch1 = curl_init('https://api.example.com/endpoint1');
$ch2 = curl_init('https://api.example.com/endpoint2');

curl_setopt($ch1, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch2, CURLOPT_RETURNTRANSFER, true);

$mh = curl_multi_init();

curl_multi_add_handle($mh, $ch1);
curl_multi_add_handle($mh, $ch2);

$active = null;

do {
    $status = curl_multi_exec($mh, $active);
    $info = curl_multi_info_read($mh);

    if (false !== $info) {
        echo curl_multi_getcontent($info['handle']) . PHP_EOL;
        curl_multi_remove_handle($mh, $info['handle']);
    }
} while ($active && $status == CURLM_OK);

curl_multi_close($mh);