chunk_split

<?

$body = '12345';

$return = chunk_split($body);
echo $return;

?>

12345

<?

$body = '12345';
$chunklen = 2;

$return = chunk_split($body, $chunklen);
echo $return;

?>

12
34
5

<?

$body = '12345';
$chunklen = 2;
$end = ',';

$return = chunk_split($body, $chunklen, $end);
echo $return;

?>

12,34,5,

<?

$data = 'encoded string';
$body = base64_encode($data);

$return = chunk_split($body);
echo $return;

?>

ZW5jb2RlZCBzdHJpbmc=