<?php namespace Intervention\Image\Gd\Commands; use Intervention\Image\Commands\AbstractCommand; class BrightnessCommand extends AbstractCommand { /** * Changes image brightness * * @param \Intervention\Image\Image $image * @return boolean */ public function execute($image) { $level = $this->argument(0)->between(-100, 100)->required()->value(); return imagefilter($image->getCore(), IMG_FILTER_BRIGHTNESS, ($level * 2.55)); } }