function drupal_strtolower

Lowercase a UTF-8 string.

Parameters

$text: The string to run the operation on.

Return value

string The string in lowercase.

Related topics

PHP wrapper functions
Functions that are wrappers or custom implementations of PHP functions.
49 calls to drupal_strtolower()
block_block_list_alter in drupal/modules/block/block.module
Implements hook_block_list_alter().
book_export in drupal/modules/book/book.pages.inc
Menu callback; Generates representations of a book page and its children.
DatabaseSchema_pgsql::processField in drupal/includes/database/pgsql/schema.inc
Set database-engine specific properties for a field.
DrupalHtmlToTextTestCase::assertHtmlToText in drupal/modules/simpletest/tests/mail.test
Helper function for testing drupal_html_to_text().
drupal_html_class in drupal/includes/common.inc
Prepares a string for use as a valid class name.

... See full list

File

drupal/includes/unicode.inc, line 526
Provides Unicode-related conversions and operations.

Code

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;
  }
}