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<?php namespace Intervention\Image\Gd\Commands; use Intervention\Image\Commands\AbstractCommand; class ContrastCommand extends AbstractCommand { /** * Changes contrast of image * * @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_CONTRAST, ($level * -1)); } }