In PHP payment processing, how do I parallelize workloads?

In PHP payment processing, parallelizing workloads can significantly enhance performance and reduce response times. This can be achieved by making use of asynchronous requests or utilizing multi-threading techniques in PHP. By handling multiple transactions or tasks concurrently, you can improve user experience and system efficiency.
PHP, payment processing, parallelization, asynchronous requests, multi-threading, performance optimization 

 100, 'currency' => 'USD'];
    $handles[$url] = processPayment($url, $data);
    curl_multi_add_handle($multi_handle, $handles[$url]);
}

// Execute all handles
$running = null;
do {
    curl_multi_exec($multi_handle, $running);
} while ($running);

// Collect the results
foreach ($handles as $url => $ch) {
    $response = curl_multi_getcontent($ch);
    echo "Response from $url: $response\n";
    curl_multi_remove_handle($multi_handle, $ch);
}

curl_multi_close($multi_handle);
?>

PHP payment processing parallelization asynchronous requests multi-threading performance optimization

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