put a variable into a hidden field

I have created a sum and my result is $result

I tried putting $result into the hidden field but it wouldn't insert into my database. For example, a value of <?php echo $_POST['rqty']; ?> worked. What would i have to change $result to in order to get it to insert into my database?
jonofatAsked:
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Ray PaseurConnect With a Mentor Commented:
tried putting $result into the hidden field

Do you mean into a type=hidden input control of HTML forms?  If you can show us the code you are using we can surely help you with this.  To echo a string into the HTML you can do something like this:

<form>
<input type="hidden" value="<?php echo $result; ?>" />
</form>

Not sure about the data base part until we see the code you are using to create the query.
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florjanCommented:
Do you get result inside of a function? if so try putting global $result; in function.
function some_function() {
global $result;

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