Slothy.me Image Controller

ImageController.php

<?php
  class ImageController {
		protected function selectRandom()
		{
			if (Cache::has('sloths')) 
			{
				$sloths = Cache::get('sloths');
				if (count($sloths) > 1) return $sloths;
				else 
				{
					Cache::forget('sloths');
					$files = glob(public_path() . '/assets/images/*.jpg');
					Cache::put('sloths', $files, 720);
					return $files;
				}
			}
			else 
			{			
				$files = glob(public_path() . '/assets/images/*.jpg');
				Cache::put('sloths', $files, 720);
				return $files;
			}
		}

		public function getRandom()
		{
			$files = self::selectRandom();		
			array_shift($files);
			Cache::put('sloths', $files, 240);
			return $files[0];
		}

		public function getSquare($size)
		{
			if (intval($size) == 0) App::abort(404, 'Non-numerical value passed');
			else
			{
			 	if (Cache::has($size)) $image = Cache::get($size);
				else 
				{
					$image['img'] = self::getRandom();
					$image['timestamp'] = date ("F d Y H:i:s GMT");
					Cache::put($size, array('img' => $image['img'], 'timestamp' => $image['timestamp']), 240);
				}

				$dimensions = getimagesize($image['img']);			

				$source = imagecreatefromjpeg($image['img']);
				$placeholder = imagecreatetruecolor($size, $size);

				imagecopyresampled($placeholder, $source, 0, 0, 0, 0, $size, $size, $dimensions[0], $dimensions[1]);
				imagedestroy($source);				
				return Response::make(View::make('image', array('img' => $placeholder)), 200, array('Content-Type' => 'image/jpeg', 'Cache-Control' => 'max-age=14400', 'Last-Modified' => $image['timestamp']));						
			}
		}

		public function getImage($width, $height)
		{
			if (intval($width) == 0 || intval($height) == 0) App::abort(404, 'Non-numerical value passed');			
			else
			{				
			 	if (Cache::has($width.'x'.$height)) $image = Cache::get($width.'x'.$height);
				else 
				{
					$image['img'] = self::getRandom();
					$image['timestamp'] = date ("F d Y H:i:s GMT");
					Cache::put($width.'x'.$height, array('img' => $image['img'], 'timestamp' => $image['timestamp']), 240);
				}

				$dimensions = getimagesize($image['img']);			

				$source = imagecreatefromjpeg($image['img']);
				$placeholder = imagecreatetruecolor($width, $height);

				imagecopyresampled($placeholder, $source, 0, 0, 0, 0, $width, $height, $dimensions[0], $dimensions[1]);
				imagedestroy($source);				
				return Response::make(View::make('image', array('img' => $placeholder)), 200, array('Content-Type' => 'image/jpeg', 'Cache-Control' => 'max-age=14400', 'Last-Modified' => $image['timestamp']));						
			}
		}
	}