PHP: How to sort the characters in a string?

Question

I have a set of strings containing characters in a PHP script, I need to sort those characters in each string.

For example:

\"bac\" -> \"abc\"
\"a         


        

Answer 1

function sort_alphabet($str) {
    $array = array();
    for($i = 0; $i < strlen($str); $i++) {
        $array[] = $str{$i};
    }
    // alternatively $array = str_split($str);
    // forgot about this

    sort($array);
    return implode('', $array);
}