function file_usage_list in Drupal 7

Determines where a file is used.

Parameters

$file: A file object.

Return value

A nested array with usage data. The first level is keyed by module name, the second by object type and the third by the object id. The value of the third level contains the usage count.

See also

file_usage_add()

file_usage_delete()

Related topics

7 calls to file_usage_list()

FileDeleteTest::testInUse in modules/simpletest/tests/file.test

Tries deleting a file that is in use.

FilePrivateTestCase::testPrivateFile in modules/file/tests/file.test

Tests file access for file uploaded to a private node.

FileUsageTest::testGetUsage in modules/simpletest/tests/file.test

Tests file_usage_list().

file_delete in includes/file.inc

Deletes a file and its database record.

file_field_delete_file in modules/file/file.field.inc

Decrements the usage count for a file and attempts to delete it.

... See full list

File

includes/file.inc, line 662

API for handling file uploads and server file management.

Code

function file_usage_list(stdClass $file) {
  $result = db_select('file_usage', 'f')
    ->fields('f', array(
    'module',
    'type',
    'id',
    'count',
  ))
    ->condition('fid', $file->fid)
    ->condition('count', 0, '>')
    ->execute();
  $references = array();
  foreach ($result as $usage) {
    $references[$usage->module][$usage->type][$usage->id] = $usage->count;
  }
  return $references;
}