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;
} 

[a_berezin]

Bette use mb_strtolower() function.

[hugo13]

Bette use mb_strtolower() function.

yes I know the mbstring functions, but: I prefer a general solution; mbstring is a non-default extension ( http://de.php.net/manual/de/mbstring.installation.php )
because I use on my host egroupware, there is a need to use mbstring & I have to set in php.ini

mbstring.func_overload = 7

( http://de.php.net/manual/de/mbstring.overload.php )
if I also set

mbstring.internal_encoding = UTF-8

then there is no need to change the zen-cart code

if you use mbstring without the ini-changes, you have to write

  function zen_parse_search_string($search_str = '', &$objects) {
    $search_str = trim(mb_strtolower($search_str, 'UTF-8')); 

but I think the safest way is to eliminate the strtolower conversion, i cannot see any need for this

[a_berezin]

You are deeply mistaken if you think that the whole world lives only in the ISO-8859-1. It should therefore be used multibaytovye function.
In <language>.php:

  define('CHARSET', 'utf-8');
  mb_internal_encoding('UTF-8');