function hook_file_mimetype_mapping_alter

Alter MIME type mappings used to determine MIME type from a file extension.

This hook is run when file_mimetype_mapping() is called. It is used to allow modules to add to or modify the default mapping from file_default_mimetype_mapping().


$mapping: An array of mimetypes correlated to the extensions that relate to them. The array has 'mimetypes' and 'extensions' elements, each of which is an array.

See also


Related topics

1 function implements hook_file_mimetype_mapping_alter()

Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.

file_test_file_mimetype_mapping_alter in drupal/modules/simpletest/tests/file_test.module
Implements hook_file_mimetype_mapping_alter().
1 invocation of hook_file_mimetype_mapping_alter()
file_mimetype_mapping in drupal/includes/
Return an array of MIME extension mappings.


drupal/modules/system/system.api.php, line 3964
Hooks provided by Drupal core and the System module.


function hook_file_mimetype_mapping_alter(&$mapping) {

  // Add new MIME type 'drupal/info'.
  $mapping['mimetypes']['example_info'] = 'drupal/info';

  // Add new extension '.info' and map it to the 'drupal/info' MIME type.
  $mapping['extensions']['info'] = 'example_info';

  // Override existing extension mapping for '.ogg' files.
  $mapping['extensions']['ogg'] = 189;