Format text

I want PHP to put spaces after a certain amount of characters

[shai_tan]

I want PHP to put spaces after a certain amount of characters, for example if I have a text string like
********xxxxxxxxxxxxxxxx and I want it to be
xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx,
how would I do that?
Thanks in advance

[shai_tan]

(without those ***)

[sabai]

use

str_split

to split the string into chunks & use

implode

to join it together with spaces... look in the manual to get the specifics of these functions

[shai_tan]

Thanks alot!