PHP code example of utopia-php / telemetry

1. Go to this page and download the library: Download utopia-php/telemetry library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

utopia-php / telemetry example snippets




topia\Telemetry\Adapter\OpenTelemetry;

$telemetry = new OpenTelemetry('http://localhost:4318/v1/metrics', 'namespace', 'app', 'unique-instance-id');

// Periodically collect and export metrics to the configured OpenTelemetry endpoint.
$telemetry->collect();

// Example using Swoole
\Swoole\Timer::tick(60_000, fn () => $telemetry->collect());


$counter = $telemetry->createCounter('http.server.requests', '{request}', 'Total HTTP requests');

$counter->add(1);
$counter->add(1, ['method' => 'GET', 'status' => '200']);


$upDownCounter = $telemetry->createUpDownCounter('http.server.active_requests', '{request}', 'Active HTTP requests');

$upDownCounter->add(1);   // request started
$upDownCounter->add(-1);  // request finished


$histogram = $telemetry->createHistogram('http.server.request.duration', 'ms', 'HTTP request duration');

$histogram->record(142);
$histogram->record(98.5, ['route' => '/api/users']);


$gauge = $telemetry->createGauge('system.memory.usage', 'By', 'Memory usage');

$gauge->record(1_073_741_824);
$gauge->record(536_870_912, ['host' => 'server-1']);


$observableGauge = $telemetry->createObservableGauge('process.cpu.usage', '%', 'CPU usage');

$observableGauge->observe(function (callable $observer): void {
    // This callback is invoked each time metrics are collected.
    $observer(sys_getloadavg()[0] * 100);
    $observer(72.4, ['core' => '0']);
    $observer(68.1, ['core' => '1']);
});

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