function image_gd_supported_extensions

Retrieve supported extensions for the GD2 toolkit.

@since 1.25.0 Function added.

Related topics

File

core/modules/system/image.gd.inc, line 34

GD2 toolkit for image manipulation within Backdrop.

Code

function image_gd_supported_extensions() {
  $supported_extensions = array('png', 'gif', 'jpg', 'jpeg');
  if (defined('IMAGETYPE_WEBP')) {
    $gd_info = gd_info();
    if (isset($gd_info['WebP Support']) && $gd_info['WebP Support'] == TRUE) {
      // Extend supported extensions, as the PHP and GD versions support WebP.
      // IMAGETYPE_WEBP and getimagesize() WebP support were both added in
      // PHP 7.1.0.
      // @see https://www.php.net/manual/en/image.constants.php
      // @see https://www.php.net/manual/en/function.getimagesize.php
      $supported_extensions[] = 'webp';
    }
  }

  return $supported_extensions;
}