ajax data response always 0 in php mysql

Question

I want to load some data from mysql to a div via ajax php. The id field which is auto increment is always equal to zero.

I have tried using get, post etc but none is wor

Answer 1

Start with debugging your actual result from the database.

if (isset($_REQUEST['customer_id'])) {

        $id = intval($_REQUEST['customer_id']);
        $query = "SELECT * FROM customers WHERE customer_id=:id";
        $stmt = $pdo->prepare( $query );
        $stmt->execute(array(':id'=>$id));
        $row=$stmt->setFetchMode(PDO::FETCH_ASSOC);

You are NOT checking for errors.

Two suggestions:

1) You are using . If you inspected the resultset you could see what is wrong with that. Just output the result in the (wrongly named) $row variable with print_r() and the like. I am sure you will see what went wrong.

2) I strong advise AGAINST using $_REQUEST. It is lazy and errorprone. Do you know where the 'customer_id' came from? Session? Cookie? POST? Or Get? If you are passing information via GET => use GET