Spliting string in PHP

programming
1

Hello everyone, I was wondering how could I split a string in PHP and ad a “<br>” at the end of each line. For example mi string is:

1.Something 2.Something else 3.Something else.

I want the string to look like this:
1.Something<br>
2.Something else <br>
3.Something else.
I’f anyone please could help me… I’ve tried everithing, from strtoken to substr, and I can’t get it right.

Thanks