Codeigniter - 全局XSS过滤TRUE

i setted up this in my config.php:

$config['global_xss_filtering'] = TRUE;

the problem for me is that it removes all the accented chars like "à,ù,è,ò"

is this usual?

also why replacing them? how can i leave them?

thanks

In order to leave the accented characters you can use the convert_accented_characters() function of text_helper which will transliterate high ASCII characters to low ASCII equivalents. You have to load the helper first. Documentation here