Add space after every 4th character

Question

I want to add a space to some output after every 4th character until the end of the string. I tried:

$str = $rows[\'value\'];


        

Answer 1

The function wordwrap() basically does the same, however this should work as well.

$newstr = '';
$len = strlen($str); 
for($i = 0; $i < $len; $i++) {
    $newstr.= $str[$i];
    if (($i+1) % 4 == 0) {
        $newstr.= ' ';
    }
}