Question

Trying to send an array from:

<select name='galaddvenn[]'  class='sel_add vl hidden' multiple='multiple'>
<option value='53'>name1</option>
<option value='352'>name2</option>
<option value='632'>name3</option>
<option value='543'>name4</option>..etc
</select>

…to/from Jquery with:

var ar = $("select#galaddvenn").serialize();

        j.ajax({
        data: ({ar : ar}), //tried with 'ar':ar
        dataType: "html",
        type:"post",
        url: "/ajax_gal_addvenn.php",
        cache: false,

….etc
to PHP:

if(isset($_POST['ar'])){
$ar = mysql_real_escape_string($_POST['ar']);
var_dump($ar);

Gives me: bool(false) 🙁

What am i doing wrong here?

Answer 1

.serialize() gets a complete POST string by itself, so it’ll be formatted like this:

galaddvenn=53&galaddvenn=352&galaddvenn=632

So your call should look like this:

j.ajax({
    data: ar,
    dataType: "html",
    type:"post",
    url: "/ajax_gal_addvenn.php",
    cache: false
});

Then on the PHP side, you’re looking for $_POST['galaddvenn'] instead.

You can test the output here.