guzzle中的多个post xml数据和多个异步请求

use GuzzleHttp\Client;

$client = new Client();

$xmlDataArray = [
    '<xml>...</xml>',
    '<xml>...</xml>',
    '<xml>...</xml>'
];

foreach ($xmlDataArray as $xmlData) {
    $response = $client->post('http://example.com/api', [
        'headers' => [
            'Content-Type' => 'application/xml'
        ],
        'body' => $xmlData
    ]);

    // 处理响应
    echo $response->getBody();
}

use GuzzleHttp\Client;
use GuzzleHttp\Promise;

$client = new Client();

$requests = [
    $client->getAsync('http://example.com/api1'),
    $client->getAsync('http://example.com/api2'),
    $client->getAsync('http://example.com/api3')
];

$results = Promise\unwrap($requests);

foreach ($results as $response) {
    // 处理响应
    echo $response->getBody();
}