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# ChangeLog
All notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
## [6.0.0] - 2023-02-03
### Removed
* This component is no longer supported on PHP 7.3, PHP 7.4 and PHP 8.0
## [5.0.3] - 2020-10-26
### Fixed
* `SebastianBergmann\Timer\Exception` now correctly extends `\Throwable`
## [5.0.2] - 2020-09-28
### Changed
* Changed PHP version constraint in `composer.json` from `^7.3 || ^8.0` to `>=7.3`
## [5.0.1] - 2020-06-26
### Added
* This component is now supported on PHP 8
## [5.0.0] - 2020-06-07
### Changed
* Parameter type for `SebastianBergmann\Timer\Duration::fromMicroseconds()` was changed from `int` to `float`
* Parameter type for `SebastianBergmann\Timer\Duration::fromNanoseconds()` was changed from `int` to `float`
* Return type for `SebastianBergmann\Timer\Duration::asNanoseconds()` was changed from `int` to `float`
### Fixed
* [#31](https://github.com/sebastianbergmann/php-timer/issues/31): Type Error on 32-bit systems (where `hrtime()` returns `float` instead of `int`)
## [4.0.0] - 2020-06-01
### Added
* Introduced `Duration` value object for encapsulating a duration with nanosecond granularity
* Introduced `ResourceUsageFormatter` object for formatting resource usage with option to explicitly pass a duration (instead of looking at the unreliable `$_SERVER['REQUEST_TIME_FLOAT']` variable)
### Changed
* The methods of `Timer` are no longer static
* `Timer::stop()` now returns a `Duration` value object
### Removed
* Functionality that is now implemented in `Duration` and `ResourceUsageFormatter` has been removed from `Timer`
## [3.1.4] - 2020-04-20
### Changed
* `Timer::timeSinceStartOfRequest()` no longer tries `$_SERVER['REQUEST_TIME']` when `$_SERVER['REQUEST_TIME_FLOAT']` is not available (`$_SERVER['REQUEST_TIME_FLOAT']` was added in PHP 5.4 and this library requires PHP 7.3)
* Improved exception messages when `$_SERVER['REQUEST_TIME_FLOAT']` is not set or is not of type `float`
### Changed
## [3.1.3] - 2020-04-20
### Changed
* `Timer::timeSinceStartOfRequest()` now raises an exception if `$_SERVER['REQUEST_TIME_FLOAT']` does not contain a `float` (or `$_SERVER['REQUEST_TIME']` does not contain an `int`)
## [3.1.2] - 2020-04-17
### Changed
* Improved the fix for [#30](https://github.com/sebastianbergmann/php-timer/issues/30) and restored usage of `hrtime()`
## [3.1.1] - 2020-04-17
### Fixed
* [#30](https://github.com/sebastianbergmann/php-timer/issues/30): Resolution of time returned by `Timer::stop()` is different than before (this reverts using `hrtime()` instead of `microtime()`)
## [3.1.0] - 2020-04-17
### Added
* `Timer::secondsToShortTimeString()` as alternative to `Timer::secondsToTimeString()`
### Changed
* `Timer::start()` and `Timer::stop()` now use `hrtime()` (high resolution monotonic timer) instead of `microtime()`
* `Timer::timeSinceStartOfRequest()` now uses `Timer::secondsToShortTimeString()` for time formatting
* Improved formatting of `Timer::secondsToTimeString()` result
## [3.0.0] - 2020-02-07
### Removed
* This component is no longer supported on PHP 7.1 and PHP 7.2
## [2.1.2] - 2019-06-07
### Fixed
* [#21](https://github.com/sebastianbergmann/php-timer/pull/21): Formatting of memory consumption does not work on 32bit systems
## [2.1.1] - 2019-02-20
### Changed
* Improved formatting of memory consumption for `resourceUsage()`
## [2.1.0] - 2019-02-20
### Changed
* Improved formatting of memory consumption for `resourceUsage()`
## [2.0.0] - 2018-02-01
### Changed
* This component now uses namespaces
### Removed
* This component is no longer supported on PHP 5.3, PHP 5.4, PHP 5.5, PHP 5.6, and PHP 7.0
[6.0.0]: https://github.com/sebastianbergmann/php-timer/compare/5.0.3...6.0.0
[5.0.3]: https://github.com/sebastianbergmann/php-timer/compare/5.0.2...5.0.3
[5.0.2]: https://github.com/sebastianbergmann/php-timer/compare/5.0.1...5.0.2
[5.0.1]: https://github.com/sebastianbergmann/php-timer/compare/5.0.0...5.0.1
[5.0.0]: https://github.com/sebastianbergmann/php-timer/compare/4.0.0...5.0.0
[4.0.0]: https://github.com/sebastianbergmann/php-timer/compare/3.1.4...4.0.0
[3.1.4]: https://github.com/sebastianbergmann/php-timer/compare/3.1.3...3.1.4
[3.1.3]: https://github.com/sebastianbergmann/php-timer/compare/3.1.2...3.1.3
[3.1.2]: https://github.com/sebastianbergmann/php-timer/compare/3.1.1...3.1.2
[3.1.1]: https://github.com/sebastianbergmann/php-timer/compare/3.1.0...3.1.1
[3.1.0]: https://github.com/sebastianbergmann/php-timer/compare/3.0.0...3.1.0
[3.0.0]: https://github.com/sebastianbergmann/php-timer/compare/2.1.2...3.0.0
[2.1.2]: https://github.com/sebastianbergmann/php-timer/compare/2.1.1...2.1.2
[2.1.1]: https://github.com/sebastianbergmann/php-timer/compare/2.1.0...2.1.1
[2.1.0]: https://github.com/sebastianbergmann/php-timer/compare/2.0.0...2.1.0
[2.0.0]: https://github.com/sebastianbergmann/php-timer/compare/1.0.9...2.0.0

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BSD 3-Clause License
Copyright (c) 2010-2023, Sebastian Bergmann
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# phpunit/php-timer
[![Latest Stable Version](https://poser.pugx.org/phpunit/php-timer/v/stable.png)](https://packagist.org/packages/phpunit/php-timer)
[![CI Status](https://github.com/sebastianbergmann/php-timer/workflows/CI/badge.svg)](https://github.com/sebastianbergmann/php-timer/actions)
[![Type Coverage](https://shepherd.dev/github/sebastianbergmann/php-timer/coverage.svg)](https://shepherd.dev/github/sebastianbergmann/php-timer)
[![codecov](https://codecov.io/gh/sebastianbergmann/php-timer/branch/main/graph/badge.svg)](https://codecov.io/gh/sebastianbergmann/php-timer)
Utility class for timing things, factored out of PHPUnit into a stand-alone component.
## Installation
You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):
```
composer require phpunit/php-timer
```
If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:
```
composer require --dev phpunit/php-timer
```
## Usage
### Basic Timing
```php
require __DIR__ . '/vendor/autoload.php';
use SebastianBergmann\Timer\Timer;
$timer = new Timer;
$timer->start();
foreach (\range(0, 100000) as $i) {
// ...
}
$duration = $timer->stop();
var_dump(get_class($duration));
var_dump($duration->asString());
var_dump($duration->asSeconds());
var_dump($duration->asMilliseconds());
var_dump($duration->asMicroseconds());
var_dump($duration->asNanoseconds());
```
The code above yields the output below:
```
string(32) "SebastianBergmann\Timer\Duration"
string(9) "00:00.002"
float(0.002851062)
float(2.851062)
float(2851.062)
int(2851062)
```
### Resource Consumption
#### Explicit duration
```php
require __DIR__ . '/vendor/autoload.php';
use SebastianBergmann\Timer\ResourceUsageFormatter;
use SebastianBergmann\Timer\Timer;
$timer = new Timer;
$timer->start();
foreach (\range(0, 100000) as $i) {
// ...
}
print (new ResourceUsageFormatter)->resourceUsage($timer->stop());
```
The code above yields the output below:
```
Time: 00:00.002, Memory: 6.00 MB
```
#### Duration since PHP Startup (using unreliable `$_SERVER['REQUEST_TIME_FLOAT']`)
```php
require __DIR__ . '/vendor/autoload.php';
use SebastianBergmann\Timer\ResourceUsageFormatter;
foreach (\range(0, 100000) as $i) {
// ...
}
print (new ResourceUsageFormatter)->resourceUsageSinceStartOfRequest();
```
The code above yields the output below:
```
Time: 00:00.002, Memory: 6.00 MB
```

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# Security Policy
This library is intended to be used in development environments only. For instance, it is used by the testing framework PHPUnit. There is no reason why this library should be installed on a webserver.
**If you upload this library to a webserver then your deployment process is broken. On a more general note, if your `vendor` directory is publicly accessible on your webserver then your deployment process is also broken.**
## Security Contact Information
After the above, if you still would like to report a security vulnerability, please email `sebastian@phpunit.de`.

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{
"name": "phpunit/php-timer",
"description": "Utility class for timing",
"type": "library",
"keywords": [
"timer"
],
"homepage": "https://github.com/sebastianbergmann/php-timer/",
"license": "BSD-3-Clause",
"authors": [
{
"name": "Sebastian Bergmann",
"email": "sebastian@phpunit.de",
"role": "lead"
}
],
"support": {
"issues": "https://github.com/sebastianbergmann/php-timer/issues"
},
"prefer-stable": true,
"require": {
"php": ">=8.1"
},
"require-dev": {
"phpunit/phpunit": "^10.0"
},
"config": {
"platform": {
"php": "8.1.0"
},
"optimize-autoloader": true,
"sort-packages": true
},
"autoload": {
"classmap": [
"src/"
]
},
"extra": {
"branch-alias": {
"dev-main": "6.0-dev"
}
}
}

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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;
use function floor;
use function sprintf;
/**
* @psalm-immutable
*/
final class Duration
{
private readonly float $nanoseconds;
private readonly int $hours;
private readonly int $minutes;
private readonly int $seconds;
private readonly int $milliseconds;
public static function fromMicroseconds(float $microseconds): self
{
return new self($microseconds * 1000);
}
public static function fromNanoseconds(float $nanoseconds): self
{
return new self($nanoseconds);
}
private function __construct(float $nanoseconds)
{
$this->nanoseconds = $nanoseconds;
$timeInMilliseconds = $nanoseconds / 1000000;
$hours = floor($timeInMilliseconds / 60 / 60 / 1000);
$hoursInMilliseconds = $hours * 60 * 60 * 1000;
$minutes = floor($timeInMilliseconds / 60 / 1000) % 60;
$minutesInMilliseconds = $minutes * 60 * 1000;
$seconds = floor(($timeInMilliseconds - $hoursInMilliseconds - $minutesInMilliseconds) / 1000);
$secondsInMilliseconds = $seconds * 1000;
$milliseconds = $timeInMilliseconds - $hoursInMilliseconds - $minutesInMilliseconds - $secondsInMilliseconds;
$this->hours = (int) $hours;
$this->minutes = $minutes;
$this->seconds = (int) $seconds;
$this->milliseconds = (int) $milliseconds;
}
public function asNanoseconds(): float
{
return $this->nanoseconds;
}
public function asMicroseconds(): float
{
return $this->nanoseconds / 1000;
}
public function asMilliseconds(): float
{
return $this->nanoseconds / 1000000;
}
public function asSeconds(): float
{
return $this->nanoseconds / 1000000000;
}
public function asString(): string
{
$result = '';
if ($this->hours > 0) {
$result = sprintf('%02d', $this->hours) . ':';
}
$result .= sprintf('%02d', $this->minutes) . ':';
$result .= sprintf('%02d', $this->seconds);
if ($this->milliseconds > 0) {
$result .= '.' . sprintf('%03d', $this->milliseconds);
}
return $result;
}
}

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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;
use function is_float;
use function memory_get_peak_usage;
use function microtime;
use function sprintf;
final class ResourceUsageFormatter
{
/**
* @psalm-var array<string,int>
*/
private const SIZES = [
'GB' => 1073741824,
'MB' => 1048576,
'KB' => 1024,
];
public function resourceUsage(Duration $duration): string
{
return sprintf(
'Time: %s, Memory: %s',
$duration->asString(),
$this->bytesToString(memory_get_peak_usage(true))
);
}
/**
* @throws TimeSinceStartOfRequestNotAvailableException
*/
public function resourceUsageSinceStartOfRequest(): string
{
if (!isset($_SERVER['REQUEST_TIME_FLOAT'])) {
throw new TimeSinceStartOfRequestNotAvailableException(
'Cannot determine time at which the request started because $_SERVER[\'REQUEST_TIME_FLOAT\'] is not available'
);
}
if (!is_float($_SERVER['REQUEST_TIME_FLOAT'])) {
throw new TimeSinceStartOfRequestNotAvailableException(
'Cannot determine time at which the request started because $_SERVER[\'REQUEST_TIME_FLOAT\'] is not of type float'
);
}
return $this->resourceUsage(
Duration::fromMicroseconds(
(1000000 * (microtime(true) - $_SERVER['REQUEST_TIME_FLOAT']))
)
);
}
private function bytesToString(int $bytes): string
{
foreach (self::SIZES as $unit => $value) {
if ($bytes >= $value) {
return sprintf('%.2f %s', $bytes / $value, $unit);
}
}
// @codeCoverageIgnoreStart
return $bytes . ' byte' . ($bytes !== 1 ? 's' : '');
// @codeCoverageIgnoreEnd
}
}

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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;
use function array_pop;
use function hrtime;
final class Timer
{
/**
* @psalm-var list<float>
*/
private array $startTimes = [];
public function start(): void
{
$this->startTimes[] = (float) hrtime(true);
}
/**
* @throws NoActiveTimerException
*/
public function stop(): Duration
{
if (empty($this->startTimes)) {
throw new NoActiveTimerException(
'Timer::start() has to be called before Timer::stop()'
);
}
return Duration::fromNanoseconds((float) hrtime(true) - array_pop($this->startTimes));
}
}

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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;
use Throwable;
interface Exception extends Throwable
{
}

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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;
use LogicException;
final class NoActiveTimerException extends LogicException implements Exception
{
}

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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;
use RuntimeException;
final class TimeSinceStartOfRequestNotAvailableException extends RuntimeException implements Exception
{
}