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

You can split the string into an array and then use any of the various sorting functions.

$in = "this is a test";
$chars = str_split($in);
sort($chars);
$out = implode($chars);