perbaikan 70

$string = str_replace("'", "", $this->username); // kyknya bukan kutip ini.. tp ` <-?!!!
$this->db->like('username', $string);
//atau
$this->db->where('username like '".$this->username."'");

$update = $this->db->update('tabel', $post);
//harusnya
update set blabla where username like '$string';