golden hour

/home/doctorbruno/.trash/insulingateTest.com/wp-content/plugins/amp/src/Instrumentation

File/Folder	Size	Actions
Event.php	3.05 KB
EventWithDuration.php	1.37 KB
ServerTiming.php	4.3 KB
StopWatch.php	1.02 KB
StopWatchEvent.php	1 KB

Edit: StopWatchEvent.php

<?php
/**
 * Class StopWatchEvent.
 *
 * @package AmpProject\AmpWP
 */

namespace AmpProject\AmpWP\Instrumentation;

/**
 * Record the timing of a single event.
 *
 * @package AmpProject\AmpWP
 * @since 2.0
 * @internal
 */
final class StopWatchEvent {

/**
	 * Start time in milliseconds.
	 *
	 * @var float
	 */
	private $start;

/**
	 * End time in milliseconds.
	 *
	 * @var float|null
	 */
	private $end;

/**
	 * StopWatchEvent constructor.
	 */
	public function __construct() {
		$this->start = $this->get_now();
	}

/**
	 * Stop the event.
	 */
	public function stop() {
		$this->end = $this->get_now();
	}

/**
	 * Get the duration of the event in milliseconds.
	 *
	 * @return float Duration in milliseconds.
	 */
	public function get_duration() {
		if ( null === $this->end ) {
			return 0.0;
		}

return $this->end - $this->start;
	}

/**
	 * Get the current time in milliseconds.
	 *
	 * @return float Current time in milliseconds.
	 */
	private function get_now() {
		return microtime( true ) * 1000;
	}
}