Insert CSS and JS in block

php

<?php
$block['content']['#attached'] = array(
                  'js' => array(
                    drupal_get_path('module', 'ooyala') . '/custom.js',
                    drupal_get_path('module', 'nc_emisiones') . '/js/ncustom.js',
                  ),
                  'css' => array(
                    drupal_get_path('module', 'nc_emisiones') . '/css/custom.css'
                  )
                );