mysqli_stmt::bind_param(): Number of elements in type definition string doesn't match number of bind variables and cannot UPDATE

Question

I have a problem when i submit or update this data. The data cannot update.

this code :

if(isset($_GET[\'newsid\'])){
    if(isset($_POST[\'submit\'])){
         


        

Answer 1

aaaa in the bind parameters is not valid, it needs to be s for string or i for integer or d for double

Answer 2

Looking at your SQL Update statement

UPDATE news  set title =?, short_desc =?, isi =?, author =?, status =?, category =? WHERE newsid =?

I can count 7 parameters. When I look at your bind_param call

$sql->bind_param('aaaaa', 
     $title,$short_desc,$isi,$author,$status,
     $date_period_start, $date_period_end, $category);

I count 5 type characters ('aaaaa') and 8 parameters ($title, $short_desc, $isi, $author, $status, $date_period_start, $date_period_end, $category). These all need to match. Reading this might help.