function drupal_strtolower


Error message

User warning: The following module is missing from the file system: theme/theme. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /var/www/html/elmsln_community/
cis7 drupal_strtolower($text)
cle7 drupal_strtolower($text)
elmsmedia7 drupal_strtolower($text)
icor7 drupal_strtolower($text)
meedjum_blog7 drupal_strtolower($text)
mooc7 drupal_strtolower($text)

Lowercase a UTF-8 string.


$text: The string to run the operation on.

Return value

string The string in lowercase.

Related topics

66 calls to drupal_strtolower()
admin_menu_output in sites/all/modules/ulmus/admin_menu/admin_menu.module
Build the administration menu output.
advagg_mod_match_path in sites/all/modules/ulmus/advagg/advagg_mod/advagg_mod.module
Transforms all CSS files into inline CSS.
block_block_list_alter in modules/block/block.module
Implements hook_block_list_alter().
book_export in modules/book/
Menu callback; Generates representations of a book page and its children.
boost_is_cacheable in sites/all/modules/ulmus/boost/boost.module
Determines whether a given url can be cached or not by boost.

... See full list


includes/, line 522
Provides Unicode-related conversions and operations.


function drupal_strtolower($text) {
  global $multibyte;
  if ($multibyte == UNICODE_MULTIBYTE) {
    return mb_strtolower($text);
  else {
    // Use C-locale for ASCII-only lowercase
    $text = strtolower($text);
    // Case flip Latin-1 accented letters
    $text = preg_replace_callback('/\xC3[\x80-\x96\x98-\x9E]/', '_unicode_caseflip', $text);
    return $text;



Error message

  • Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/elmsln_community/ in drupal_send_headers() (line 1499 of /var/www/html/elmsln_community/
  • Error: Call to undefined function apc_delete() in DrupalAPCCache->clear() (line 289 of /var/www/html/elmsln_community/
The website encountered an unexpected error. Please try again later.