search UTF8

[hugo13]

searching for umlauts ( like äöü...) doesnt bring any result

because the function zen_parse_search_string converts the searchString to lower, the search fails because the php-function strtolower is not utf8 safe

solution:

1.removing strtolower; mysql is not case sensitive

// Parse search string into indivual objects
function zen_parse_search_string($search_str = '', &$objects) {
    $search_str = trim(($search_str)); 

2.

// Parse search string into indivual objects
  function zen_parse_search_string($search_str = '', &$objects) {
    $search_str = trim(strtolower_utf8($search_str));
..........
function strtolower_utf8($inputString) {
    // http://de.php.net/manual/de/function.strtolower.php#78560
    $outputString    = utf8_decode($inputString);
    $outputString    = strtolower($outputString);
    $outputString    = utf8_encode($outputString);
    return $outputString;
}