How to send serialize form data using JQuery if the input element is an array

Question

I have this piece of code in my PHP code:

while ($row = mysqli_fetch_assoc($result))
{
    extract($row);
    echo \"\";
    echo \"

        

Answer 1

Thanks Tomalak.

In the PHP file, I am using the following code now:

while ($row = mysqli_fetch_assoc($result)) {
    extract($row);
    echo "";
        echo "$book_id";
        echo "$book_name";
    echo "";
} // while

**The book_id is unique.

Using tvanfosson solution, now i am able to get array of input value

var selectedBooks = $('form#book_form').serialize(); alert (selectedBooks);

From the alert message box, I get ==> bookArray%5B%5D=T2.05&bookArray%5B%5D=T2.81

Now, when I sent the serialize input value to PHP file using JQuery

var selectedBooks   = $('form#book_form').serialize();
alert (selectedBooks);

var url = 'saveBookList.php';

// Send to server using JQuery
$.post(url, {bookArray: selectedBooks}, function(responseData) {
    $("#save-result").text(responseData);
});

Inside saveBookList.php to process the serialize form, i got this error "Invalid argument supplied for foreach()".

Inside saveBookList.php,

// If you have selected from list box.
if(isset($_POST['bookArray'])) {

    // Get array or bookID selected by user
    $selectedBookId = $_POST['bookArray'];
    echo $selectedBookId;

    foreach($selectedBookId as $selectListItem) {
        echo "You sent this -->" . $selectListItem . "\n";
    }
}

The PHP code above works fine if i am sending using Prototype.

For Prototype when i do echo $selectedBookId;

I got Array.

For JQuery, when i do echo $selectedBookId;

I got ==> bookArray%5B%5D=T4.11&bookArray%5B%5D=T4.38

My question, does jQuery support array value for post method?