htmlpurifier add missing url protocol

Question

using AutoFormat.Linkify HTMLpurifier converts text such as http://www.example.com into links. But many people write links without the protocol, such as www.example.com or example.com. Is there anyway to use HTMLpurifier to also convert these into links?

Answer 1

I know no way to get HTMLpurifier do this. But you should get this work by adding http:// to every link, that does not containing it. you can use a regular expression to do this.

preg_replace( '#\s((https?|ftp)\:\/\/)?([a-z0-9-.]*)\.([a-z]{2,4})\s#', 
              ' http://${3}.${4} ', $html );

Test the regex here.

Example:

test example.com test<br>
test www.example.com test<br>
test http://example.com test

becomes

test http://example.com test
test http://www.example.com test
test http://example.com test

Now HTMLpurifier should do the right things.