alpha, xss_clean and i18n in CI

[eluser]Crimp[/eluser]
Anyways:

Code:

function alpha_check($str)
    {    
        setlocale(LC_ALL, 'your locale');
        
        if (!ctype_alpha($str)) {
        
            $this->validation->set_message('alpha_check', 'Your error message.');
            return FALSE;
        
        } else {
        
            return TRUE;
        
        }
        
    }

Code:

function alphanumeric_check($str)
    {
        setlocale(LC_ALL, 'your locale');
        
        if (!ctype_alnum($str)) {
        
            $this->validation->set_message('alphanumeric_check', 'Your error message.');
            return FALSE;
        
        } else {
        
            return TRUE;
        
        }
        
    }