apply_filters() function in wordpress

Question

hey guys im really frustrated

im looking for a way to retrieve back my slug to the normal text as wordpress does

in wordpress there is a function to do so :

apply_filters('editable_slug', $slug)

i search all related files to find what this function does, but couldn't understand a bit.

as ypu may know , making a slug out of a normal text is a easy job , but when its converted , for Utf-8 languages such as Arabic , words will be changed to unreadable unicodes .

e.g. :

http://localhost/page/%d8%a7%d9%84%d9%84%d9%87

do you know how this function works in wordpress ?

apply_filters('editable_slug', $slug)

and how i can do the same in my own php project ?

Answer 1

Check out this question: Unicode characters in URLs for some good background.

The URL you show looks okay basically - it's the proper percent encoded representation of the arabic characters in question.

You should be able to display them in proper arabic on your web page. Copy+pasting will give you the URLencoded form, which is a good thing because that way, your permalinks will work in non-UTF-8-speaking clients as well.

Answer 2

Call rawurldecode on the percent-encoded form -- this will give you the text in UTF-8 encoding. If your webpage encoding is UTF-8, you just have to call htmlspecialchars($str, ENT_NOQUOTES, 'UTF-8').

Example:

$str = rawurldecode('%d8%a7%d9%84%d9%84%d9%87');
echo htmlspecialchars($str, ENT_NOQUOTES, 'UTF-8');