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# phpunit/php-timer

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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
use SebastianBergmann\Timer\Timer;

Timer::start();

foreach (\range(0, 100000) as $i) {
    // ...
}

$time = Timer::stop();
var_dump($time);

print Timer::secondsToTimeString($time);
```

The code above yields the output below:

```
float(0.0023904049994599)
2 milliseconds
```

### Resource Consumption Since PHP Startup

```php
use SebastianBergmann\Timer\Timer;

foreach (\range(0, 100000) as $i) {
    // ...
}

print Timer::resourceUsage();
```

The code above yields the output below:

```
Time: 00:00.002, Memory: 6.00 MB
```