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<?php declare(strict_types=1);
/*
* This file is part of phpunit/php-timer.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Timer;
final class Timer
{
/**
* @var int[]
*/
private static $sizes = [
'GB' => 1073741824,
'MB' => 1048576,
'KB' => 1024,
];
/**
* @var int[]
*/
private static $times = [
'hour' => 3600000,
'minute' => 60000,
'second' => 1000,
];
/**
* @var float[]
*/
private static $startTimes = [];
public static function start(): void
{
self::$startTimes[] = \microtime(true);
}
public static function stop(): float
{
return \microtime(true) - \array_pop(self::$startTimes);
}
public static function bytesToString(float $bytes): string
{
foreach (self::$sizes as $unit => $value) {
if ($bytes >= $value) {
return \sprintf('%.2f %s', $bytes >= 1024 ? $bytes / $value : $bytes, $unit);
}
}
return $bytes . ' byte' . ((int) $bytes !== 1 ? 's' : '');
}
public static function secondsToTimeString(float $time): string
{
$ms = \round($time * 1000);
foreach (self::$times as $unit => $value) {
if ($ms >= $value) {
$time = \floor($ms / $value * 100.0) / 100.0;
return $time . ' ' . ($time == 1 ? $unit : $unit . 's');
}
}
return $ms . ' ms';
}
/**
* @throws RuntimeException
*/
public static function timeSinceStartOfRequest(): string
{
if (isset($_SERVER['REQUEST_TIME_FLOAT'])) {
$startOfRequest = $_SERVER['REQUEST_TIME_FLOAT'];
} elseif (isset($_SERVER['REQUEST_TIME'])) {
$startOfRequest = $_SERVER['REQUEST_TIME'];
} else {
throw new RuntimeException('Cannot determine time at which the request started');
}
return self::secondsToTimeString(\microtime(true) - $startOfRequest);
}
/**
* @throws RuntimeException
*/
public static function resourceUsage(): string
{
return \sprintf(
'Time: %s, Memory: %s',
self::timeSinceStartOfRequest(),
self::bytesToString(\memory_get_peak_usage(true))
);
}
}