Cannot pass hidden form value to php - php

Question

When i pass the hidden value to the php file it gives (true) 1 as a answer.
I am passing the value from the modal to the php file.
The span value was retrieved using jquery.
PHP CODE:
<?php
include "dbcon.php";
if(isset($_POST['pd_del']))
{
echo mysql_error();
$delid=isset($_POST['delidd']);
echo $delid;
}else
{
echo mysql_error();
}
?>
HTML CODE:
Form thats send the product id to the php file
<form name="prd_del" action="del_prod.php" method="post">
<div class="modal fade" id="delModal" tabindex="-1" role="dialog" aria-labelledby="delModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
<h4 class="modal-title" id="myModalLabel">DELETE PRODUCT</h4>
</div>
<div class="modal-body">
<h5>Do you want to Delete this Product ??? <span id="delid" name="delid"></span></h5>
<input type="hidden" name="delidd" id="delid">
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" class="btn btn-primary" name="pd_del" >Delete It!</button>
</div>
</div>
</div>
</div>
</form>

Answer 1

Your HTML :
<h5>Do you want to Delete this Product ??? <span id="delid" name="delid"></span></h5>
<input type="hidden" name="delidd" id="delid">
Your JS :
$(".modal-body #delid").text( pd_del_id);
First problem is that you have 2 elements with the same id value (the sppan and the input field). You shouldn't.
Change one of your ids, something like that :
<h5>Do you want to Delete this Product ??? <span id="delid" name="delid"></span></h5>
<input type="hidden" name="delidd" id="delid_value">
And in your JS, if I understood what you want to do :
$(".modal-body #delid").text(pd_del_id); // Here you put the product's ID in your span to show it to the user.
$(".modal-body #delid_value").val(pd_del_id); // Here you put the product's ID in your hidden field to send it with your form.
Now, your PHP :
$delid=isset($_POST['delidd']);
echo $delid;
isset() function returns either true or false if the variable is set or not.
The variable $_POST['delidd'] is set (the hidden field is always sent to your PHP).
If you want to get the value (your product's ID) :
if (!empty($_POST['delidd'])) {
// The value is not empty
$delid = $_POST['delidd'];
} else {
// The value is empty : there is a problem (For example echo an error message or do whatever you have to do in that case.)
}