How can PHP handle background requests to API endpoints without interrupting the normal flow of a web application?

To handle background requests to API endpoints without interrupting the normal flow of a web application, you can use PHP's cURL library to make asynchronous HTTP requests. By using cURL in combination with PHP's multi-curl functionality, you can send multiple requests in parallel without blocking the main script execution. 

// Initialize cURL multi handle
$mh = curl_multi_init();

// Array of cURL handles for individual requests
$ch = [];

// URLs of API endpoints to request
$urls = [
    'https://api.endpoint1.com',
    'https://api.endpoint2.com',
    'https://api.endpoint3.com'
];

// Create cURL handles for each URL
foreach ($urls as $url) {
    $ch[] = curl_init($url);
    curl_setopt($ch[count($ch) - 1], CURLOPT_RETURNTRANSFER, true);
    curl_multi_add_handle($mh, $ch[count($ch) - 1]);
}

// Execute all cURL requests in parallel
$running = null;
do {
    curl_multi_exec($mh, $running);
} while ($running > 0);

// Close cURL handles
foreach ($ch as $handle) {
    curl_multi_remove_handle($mh, $handle);
    curl_close($handle);
}

// Close cURL multi handle
curl_multi_close($mh);

Keywords

asynchronous PHP cURL Guzzle multi-threading API integration

Related Questions