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   1  <?php
   2  
   3  /**
   4   * @package     Joomla.Site
   5   * @subpackage  com_banners
   6   *
   7   * @copyright   (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
   8   * @license     GNU General Public License version 2 or later; see LICENSE.txt
   9   */
  10  
  11  namespace Joomla\Component\Banners\Site\Helper;
  12  
  13  // phpcs:disable PSR1.Files.SideEffects
  14  \defined('_JEXEC') or die;
  15  // phpcs:enable PSR1.Files.SideEffects
  16  
  17  /**
  18   * Banner Helper Class
  19   *
  20   * @since  1.6
  21   */
  22  abstract class BannerHelper
  23  {
  24      /**
  25       * Checks if a URL is an image
  26       *
  27       * @param   string  $url  The URL path to the potential image
  28       *
  29       * @return  boolean  True if an image of type bmp, gif, jp(e)g, png or webp, false otherwise
  30       *
  31       * @since   1.6
  32       */
  33      public static function isImage($url)
  34      {
  35          $urlCheck = explode('?', $url);
  36  
  37          if (preg_match('#\.(?:bmp|gif|jpe?g|png|webp)$#i', $urlCheck[0])) {
  38              return true;
  39          }
  40  
  41          return false;
  42      }
  43  }