Guzzle PHP Load Test

guzzleloadtest.php

<?php

require 'vendor/autoload.php';

use GuzzleHttp\Client;
use GuzzleHttp\Promise;

const TARGET_URL = 'https://example.com';
const CONCURRENT_REQUESTS = 100;

$client = new Client();

// Function to send a request and measure response time
function sendRequest($client) {
    $start = microtime(true);

    try {
        $response = $client->get(TARGET_URL);
        if ($response->getStatusCode() == 200) {
            $duration = microtime(true) - $start;
            return [
                'success' => true,
                'duration' => $duration
            ];
        }
    } catch (Exception $e) {
        // Handle exception if needed
    }

    return ['success' => false];
}

// Simulate concurrent requests
$promises = [];
for ($i = 0; $i < CONCURRENT_REQUESTS; $i++) {
    $promises[] = $client->getAsync(TARGET_URL);
}

// Wait for all requests to complete
$responses = Promise\settle($promises)->wait();

$successCount = 0;
$totalTime = 0;

foreach ($responses as $response) {
    if ($response['state'] === 'fulfilled' && $response['value']->getStatusCode() === 200) {
        $successCount++;
        // Assuming the X-Response-Time header contains the response time in seconds.
        // This is just an example, your server might not set this header.
        $totalTime += floatval($response['value']->getHeaderLine('X-Response-Time'));
    }
}

echo "Successful requests: {$successCount} out of " . CONCURRENT_REQUESTS . PHP_EOL;
echo "Average response time: " . ($successCount ? $totalTime / $successCount : 'N/A') . " seconds" . PHP_EOL;

?>