Putting a variable in the value field of a form

I'm just getting started in php and using forms to pass the variables via post and/or session.

Here is what I want to do. I want 900 to pass onto the next page when I submit.

$subtotal = 900;
 
<input type="hiddend" name="total" value=$subtotal />
 
<input type="submit" name="Submit" value="Pay" />

Code (markup):

However, the above code just passes a 0.

Is there a way to pass $subtotal ?
Thanks.

 

Use a SESSION variable

 

I guess I should elaborate a little bit more.

I need to pass the $900 to the merhant's site. The example they gave me was

...action=[URL]https://merchantsite.com/process.asp[/URL] />
 
<input type="text" name="total" value="900">

Code (markup):

However, I have a script that calculates the subtotal for the customer, so all they have is click the "pay" button.

Thanks for the quick repsonse though.

-Rob

 

you should say

<input type="hiddend" name="total" value="<? echo $subtotal;?>" />

 

Thank you! That Worked!

Rep added.

 

that's cool,and that's the easiest way

of course,you can type

<input type="hiddend" name="total" value="<?=$subtotal;?>" />

for short,but it is not recommened now.

 

This should work 100%,

<input type="hidden" name="total" value="<?php echo $subtotal;?>" />

Code (markup):