TalkPHP - add special characters to DB?

Hello,

I have a question about preg_match, I couldn’t understand how it works. Code below allow me to add word without space and special characters. I want to add words for another language, which contains spaces and special character like (â, ế, đ…) but not (?, #, %...etc). So my questions are:

1. I set DB to utf8_general_ci, is it correct? To show special unicode characters

2. How to modifly code below to make it adds words with space and special unicode characters? I think it is about preg_match, but I don’t know how it works and how to edit it :-/

PHP Code:


		
			
function add_new_word($word){

    if (preg_match('/^[a-zA-Z]+$/', $_POST['word'])) {

        $word = $_POST['word'];

    } else {

        echo 'Illegal parameters!';

        exit();

    }



    if (add_word($word)) {

        echo "<p>Successfully added word! </p>";

    } else {

        echo "<p>Failure! Unable to add word! </p>";

    }

    echo "<b>Word:</b> $word<br/>";

}

Thank you :-)