$rim = new rim();

// single image
$image_data = $rim->getSingleImageTypeAndSize('http://domain/path_to_png_file.png');

// this will $image_data contain on success
$image_data = array(
    'type' => 'png',
    'width' => '450',
    'height' => '320'
);

// if the function fails, this will $image_data contain
$image_data = array(
	'error' => // information about the error. see https://github.com/MatejB/rim/blob/master/source/rim.php#L148
);

// multiple image fetch
$images_data_input = array(
	'png_image' => 'http://domain/path_to_png_image.png',
	'gif_image'	=> 'http://domain/path_to_gif_image.gif',
	'jpg_image' => 'http://domain/path_to_jpeg_image.jpg'
);

// rim options
$rim_options = array(
	'max_num_of_threads' => 3, // how many threads to use, 10 is default
);
$images_data = $rim->getMultiImageTypeAndSize($images_data_input, $rim_options);

// this will $images_data contain
$images_data = array(
	'png_image' => 	array(
						'url' => 'http://domain/path_to_png_image.png',
						'image_data' => array(
								'type' => 'png',
								'width' => '450',
								'height' => '220'
							),
						'error' => array()
					),
	'gif_image' => 	array(
						'url' => 'http://domain/path_to_gif_image.gif',
						'image_data' => array(
								'type' => 'gif',
								'width' => '110',
								'height' => '110'
							),
						'error' => array()
					),
	'jpg_image' => 	array(
						'url' => 'http://domain/path_to_jpeg_image.jpg',
						'image_data' => array(
								'type' => 'png',
								'width' => '250',
								'height' => '120'
							),
						'error' => array()
					)
);