function drupal_clean_css_identifier
drupal_clean_css_identifier($identifier, $filter = array(' ' => '-', '_' => '-', '/' => '-', '[' => '-', ']' => ''))
Prepares a string for use as a CSS identifier (element, class, or ID name).
http://www.w3.org/TR/CSS21/syndata.html#characters shows the syntax for valid CSS identifiers (including element names, classes, and IDs in selectors.)
Parameters
$identifier: The identifier to clean.
$filter: An array of string replacements to use on the identifier.
Return value
The cleaned identifier.
File
- includes/common.inc, line 3902
- Common functions that many Drupal modules will need to reference.
Code
function drupal_clean_css_identifier($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; }
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Licensed under the GNU General Public License, version 2 and later.
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https://api.drupal.org/api/drupal/includes!common.inc/function/drupal_clean_css_identifier/7.x