function file_scan_directory

7.x file.inc file_scan_directory($dir, $mask, $options = array(), $depth = 0)
5.x file.inc file_scan_directory($dir, $mask, $nomask = array('.', '..', 'CVS'), $callback = 0, $recurse = TRUE, $key = 'filename', $min_depth = 0, $depth = 0)
6.x file.inc file_scan_directory($dir, $mask, $nomask = array('.', '..', 'CVS'), $callback = 0, $recurse = TRUE, $key = 'filename', $min_depth = 0, $depth = 0)
8.x file.inc file_scan_directory($dir, $mask, $options = array(), $depth = 0)

Finds all files that match a given mask in a given directory.

Directories and files beginning with a period are excluded; this prevents hidden files and directories (such as SVN working directories) from being scanned.

Parameters

$dir: The base directory or URI to scan, without trailing slash.

$mask: The preg_match() regular expression of the files to find.

$options: An associative array of additional options, with the following elements:

  • 'nomask': The preg_match() regular expression of the files to ignore. Defaults to '/(\.\.?|CVS)$/'.
  • 'callback': The callback function to call for each match. There is no default callback.
  • 'recurse': When TRUE, the directory scan will recurse the entire tree starting at the provided directory. Defaults to TRUE.
  • 'key': The key to be used for the returned associative array of files. Possible values are 'uri', for the file's URI; 'filename', for the basename of the file; and 'name' for the name of the file without the extension. Defaults to 'uri'.
  • 'min_depth': Minimum depth of directories to return files from. Defaults to 0.

$depth: Current depth of recursion. This parameter is only used internally and should not be passed in.

Return value

An associative array (keyed on the chosen key) of objects with 'uri', 'filename', and 'name' members corresponding to the matching files.

Related topics

26 calls to file_scan_directory()
DrupalWebTestCase::drupalGetTestFiles in drupal/modules/simpletest/drupal_web_test_case.php
Get a list files that can be used in tests.
drupal_clear_css_cache in drupal/includes/common.inc
Deletes old cached CSS files.
drupal_clear_js_cache in drupal/includes/common.inc
Deletes old cached JavaScript files and variables.
drupal_get_database_types in drupal/includes/install.inc
Returns all supported database installer objects that are compiled into PHP.
drupal_system_listing in drupal/includes/common.inc
Returns information about system object files (modules, themes, etc.).

... See full list

1 string reference to 'file_scan_directory'
drupal_system_listing in drupal/includes/common.inc
Returns information about system object files (modules, themes, etc.).

File

drupal/includes/file.inc, line 2106
API for handling file uploads and server file management.

Code

function file_scan_directory($dir, $mask, $options = array(), $depth = 0) {
  // Merge in defaults.
  $options += array(
    'nomask' => '/(\.\.?|CVS)$/',
    'callback' => 0,
    'recurse' => TRUE,
    'key' => 'uri',
    'min_depth' => 0,
  );

  $options['key'] = in_array($options['key'], array('uri', 'filename', 'name')) ? $options['key'] : 'uri';
  $files = array();
  if (is_dir($dir) && $handle = opendir($dir)) {
    while (FALSE !== ($filename = readdir($handle))) {
      if (!preg_match($options['nomask'], $filename) && $filename[0] != '.') {
        $uri = "$dir/$filename";
        $uri = file_stream_wrapper_uri_normalize($uri);
        if (is_dir($uri) && $options['recurse']) {
          // Give priority to files in this folder by merging them in after any subdirectory files.
          $files = array_merge(file_scan_directory($uri, $mask, $options, $depth + 1), $files);
        }
        elseif ($depth >= $options['min_depth'] && preg_match($mask, $filename)) {
          // Always use this match over anything already set in $files with the
          // same $$options['key'].
          $file = new stdClass();
          $file->uri = $uri;
          $file->filename = $filename;
          $file->name = pathinfo($filename, PATHINFO_FILENAME);
          $key = $options['key'];
          $files[$file->$key] = $file;
          if ($options['callback']) {
            $options['callback']($uri);
          }
        }
      }
    }

    closedir($handle);
  }

  return $files;
}