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

PHP3 Compatible:

Try this:

$strLen = strlen( $str );
for($i = 0; $i < $strLen; $i += 4){
  echo substr($str, $i, 4) . ' ';
} 
unset( $strLen );