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function drupal_clean_css_identifier in Glossary 6

This code is borrowed from Drupal 7 to produce CSS class names.

1 call to drupal_clean_css_identifier()
glossary_overview in ./glossary.module

File

./glossary.module, line 12
Glossary terms will be automatically marked with links to their descriptions.

Code

function drupal_clean_css_identifier($identifier, $filter = array(
  ' ' => '-',
  '_' => '-',
  '/' => '-',
  '[' => '-',
  ']' => '',
)) {

  // By default, we filter using Drupal's coding standards.
  $identifier = strtr($identifier, $filter);

  // Valid characters in a CSS identifier are:
  // - the hyphen (U+002D)
  // - a-z (U+0030 - U+0039)
  // - A-Z (U+0041 - U+005A)
  // - the underscore (U+005F)
  // - 0-9 (U+0061 - U+007A)
  // - ISO 10646 characters U+00A1 and higher
  // We strip out any character not in the above list.
  $identifier = preg_replace('/[^\\x{002D}\\x{0030}-\\x{0039}\\x{0041}-\\x{005A}\\x{005F}\\x{0061}-\\x{007A}\\x{00A1}-\\x{FFFF}]/u', '', $identifier);
  return $identifier;
}