drupal_strtolower

Versions
4.7 – 7: drupal_strtolower($text)

Lowercase a UTF-8 string.

▸ 3 functions call drupal_strtolower()

▾ 3 functions call drupal_strtolower()

book_export in modules/book.module: Menu callback; Generates various representation of a book page with all descendants and prints the requested representation to output.
search_index in modules/search.module: Update the full-text search index for a particular item.
search_simplify in modules/search.module: Simplifies a string according to indexing rules.

Code

includes/unicode.inc, line 377

<?php
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;
  }
}
?>

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