separate with commas

Question

hey there I have this,

$following_user_id .= $row[\'following_user_id\'];

and I get

44443344330

then I use th

Answer 1

$following_user_ids = array();

//loop this:
$following_user_ids[] = $row['following_user_id'];

$user_ids_string = implode(',',$following_user_ids);