显示ZF2请求执行时间

Question

I want to print in every page of my site, which is in ZF2, the request execution time.

I have already defined a constant within the index.php (which is the first file the request access) with the request initial microtime(true).
Now, where should I get the request final microtime(true)?

My plan is to have something like this:

$executionTime = ($finalTime - $initialTime) / 1000000; // in seconds
$executionTime = number_format($executionTime, 2);

Answer 1

My solution is based on this answer.

Every view of mine has a footer.phtml attached to it, so if I print it there, there will be no need to change many files.

To print the time there, first I wrote something specific to that footer.phtml, for example Execution time:

Than in module/Application/Module.php I added this code to onBootstrap()

$eventManager->attach(\Zend\Mvc\MvcEvent::EVENT_FINISH, function($e) {
    $time = microtime(true) - REQUEST_MICROTIME;

    // formatting time to be more friendly
    if ($time <= 60) {
        $timeF = number_format($time, 2, ',', '.').'s'; // conversion to seconds

    } else {
        $resto  = fmod($time, 60);
        $minuto = number_format($time / 60, 0);
        $timeF = sprintf('%dm%02ds', $minuto, $resto); // conversion to minutes and seconds
    }

    // Search static content and replace for execution time
    $response = $e->getResponse();
    $response->setContent(str_replace(
        'Execution time:', 'Execution time: '.$timeF, $response->getContent()));

}, 100000);