Insert tag after certain character?

[duckduckgoose]

I'd like to insert a <BR> tag after every X number of characters. Anyone know how I can do that?

[Installer]

$new_str = chunk_split($str, $x, '<br />');

[Salkcin]

use wordwrap()

[Installer]

"wordwrap()" breaks on word endings, not every x characters. The latter is what ddg asked for.