Resize images on the fly

ImageResizeController.php

<?php

class ImageResizeController extends BaseController {

	
	/**
	 * This method catches urls like /imagecache/width/height/path/to/original_image.jpg and
	 * creates the image if public/imagecache/width/height/path/to/original_image.jpg doesn't exist.
	 * 
	 * Urls like this are used for returning a resized version of /path/to/original_image.jpg
	 *
	 * Requires "intervention/image": "~2.1"
	 */
	public function display($width, $height = null, $path = null) {
		
		
		

		if (!$path) 
		{
			$path = $height;
			$height = null;

			$savePathConfig = [
				'folder' => 'imagecache',
				'width' => $width,
				'path' => dirname($path),
				'filename' => basename($path),
			];

		} else {
			$savePathConfig = [
				'folder' => 'imagecache',
				'width' => $width,
				'height' => $height,
				'path' => dirname($path),
				'filename' => basename($path),
			];
		}

		//build cache path
		$cachePath = implode('/',$savePathConfig);
		$cachePath = public_path($cachePath);

		//if cached version already exists, return cached version
		if (File::exists($cachePath)) {
			$image = Image::make($cachePath);
			return $image->response();
		}

		//generate cached version
		if (File::exists(public_path($path))) {
			$readPath = public_path($path);
			$image = Image::make($readPath);

			if ($height) {
				$image->fit($width, $height);
			} else {
				// $image->resize($width, null);
				$image->resize($width, null, function ($constraint) {
				    $constraint->aspectRatio();
				});
			}
			// $image->sharpen(5);

			$saveFolder = dirname($cachePath);

			//create folder
			@mkdir($saveFolder, 0755, true);

			$image->save($cachePath, 75);

			return $image->response();
			
		} else {
			return 'error no file';
		}
		
	}

}

routes.php

<?php

Route::get('/imagecache/{width}/{height}/{path}', array('as' => 'image', 'uses' => 'ImageResizeController@display'))
        ->where(['width' => '[0-9]+', 'height' => '[0-9]+', 'path' => '([A-z\d-\s\/_.]+)?']);
Route::get('/imagecache/{width}/{path}', array('as' => 'image', 'uses' => 'ImageResizeController@display'))
        ->where(['width' => '[0-9]+', 'path' => '([A-z\d-\s\/_.]+)?']);