Question

As topic said, I need a recursive function that split a string if its contain words longer more than (for example) 5 chars.

Example :

if i have the string “aaaaa aaa a aaaa aaaaa” its ok;

if i have the string “aaaaa bbbbbb aa aaaaa” I need to split 1 time (and, for example, add the char # before the first bbbbb and the last b). So the result will be “aaaaa bbbbb#b aa aaaaa”

if i have the string “aaaaa bbbbbbbbbbbbbbbb aa aaaaa” as before; notice that the bold one this time have 16 chars, so i need to split 3 time this time 🙂

Is there any php function already implemented or i need to make it?
Cheers

Answer 1

Using preg_replace :

echo preg_replace("`(\S{5})(?!\s|$)`", '$1#', "aaaaa bbbbbbbbbbbbbbbb aa aaaaa")
// aaaaa bbbbb#bbbbb#bbbbb#b aa aaaaa

Notice I replace every set of 5 characters not followed by a space by the set of 5 characters + #. You can obviously replace the # with anything else.