Requests::request_multiple() WordPress Method
The Requests::request_multiple() method is a powerful tool for making multiple HTTP requests in parallel. This can be very useful when you need to fetch data from multiple sources, or when you want to make multiple requests to the same server. This method takes an array of request objects as its first parameter, and an optional array of options as its second parameter. The options array can be used to specify a callback function that will be called when all the requests have completed. The Requests::request_multiple() method is a great way to improve the performance of your WordPress site. When used correctly, it can significantly reduce the amount of time it takes to load pages.
Requests::request_multiple( array $requests, array $options = array() ) #
Send multiple HTTP requests simultaneously
Description
The $requests parameter takes an associative or indexed array of request fields. The key of each request can be used to match up the request with the returned data, or with the request passed into your multiple.request.complete callback.
The request fields value is an associative array with the following keys:
url: Request URL Same as the$urlparameter to Requests::request (string, required)headers: Associative array of header fields. Same as the$headersparameter to Requests::request (array, default:array())data: Associative array of data fields or a string. Same as the$dataparameter to Requests::request (array|string, default:array())type: HTTP request type (use Requests constants). Same as the$typeparameter to Requests::request (string, default:Requests::GET)cookies: Associative array of cookie name to value, or cookie jar. (array|Requests_Cookie_Jar)
If the $options parameter is specified, individual requests will inherit options from it. This can be used to use a single hooking system, or set all the types to Requests::POST, for example.
In addition, the $options parameter takes the following global options:
complete: A callback for when a request is complete. Takes two parameters, a Requests_Response/Requests_Exception reference, and the ID from the request array (Note: this can also be overridden on a per-request basis, although that’s a little silly) (callback)
Parameters
- $requests
(array)(Required)Requests data (see description for more information)
- $options
(array)(Optional)Global and default options (see Requests::request)
Default value: array()
Return
(array) Responses (either Requests_Response or a Requests_Exception object)
Source
File: wp-includes/class-requests.php
public static function request_multiple($requests, $options = array()) {
$options = array_merge(self::get_default_options(true), $options);
if (!empty($options['hooks'])) {
$options['hooks']->register('transport.internal.parse_response', array('Requests', 'parse_multiple'));
if (!empty($options['complete'])) {
$options['hooks']->register('multiple.request.complete', $options['complete']);
}
}
foreach ($requests as $id => &$request) {
if (!isset($request['headers'])) {
$request['headers'] = array();
}
if (!isset($request['data'])) {
$request['data'] = array();
}
if (!isset($request['type'])) {
$request['type'] = self::GET;
}
if (!isset($request['options'])) {
$request['options'] = $options;
$request['options']['type'] = $request['type'];
}
else {
if (empty($request['options']['type'])) {
$request['options']['type'] = $request['type'];
}
$request['options'] = array_merge($options, $request['options']);
}
self::set_defaults($request['url'], $request['headers'], $request['data'], $request['type'], $request['options']);
// Ensure we only hook in once
if ($request['options']['hooks'] !== $options['hooks']) {
$request['options']['hooks']->register('transport.internal.parse_response', array('Requests', 'parse_multiple'));
if (!empty($request['options']['complete'])) {
$request['options']['hooks']->register('multiple.request.complete', $request['options']['complete']);
}
}
}
unset($request);
if (!empty($options['transport'])) {
$transport = $options['transport'];
if (is_string($options['transport'])) {
$transport = new $transport();
}
}
else {
$transport = self::get_transport();
}
$responses = $transport->request_multiple($requests, $options);
foreach ($responses as $id => &$response) {
// If our hook got messed with somehow, ensure we end up with the
// correct response
if (is_string($response)) {
$request = $requests[$id];
self::parse_multiple($response, $request);
$request['options']['hooks']->dispatch('multiple.request.complete', array(&$response, $id));
}
}
return $responses;
}
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