Buttons not displayed on Confirm page

When I upload the site to my remote host the confirm page works fine, with the "modify information" and "submit order" buttons showing and working.

However when I upload the site to my client's hosting service, The buttons don't show and the customer is stuck, not being able to proceed.

I had this same issue when viewing the site on my local host. Ray Borduin told me that I needed to turn on something in my local server's PHP for this to work. We were talking on the phone and I've lost where I wrote the answer...

I assume I'll have to get tech support at my client's hosting service to make the change, so I need to have the correct terminology to explain it to them..

on the confirm page, add the following code at line 1 to turn on error reporting:

<?php

error_reporting(E_ALL);

ini_set('display_errors','on');

?>

and post a link to your confirm page so I can see what the issue may be.

Jason,
You've trained me to add the error code to the beginning of every php page, so it's already there (but no error messages display).

I'll send you two links: the first is to my host (where I put the site as a demo for the client), where the confirm.php page works fine:
jimrstudios.com/pr/store.php
(I added the store page because you have to have something in the cart and put in an address to see the effect on the confirm page).

Next are the exact same files uploaded to the client's host server, where the buttons DO NOT show up on the confirm page:
myhairrelaxer.com/store.php

you have to view the page source to see the error:


<b>Fatal error</b>: Call to undefined function mhash() in <b>/home2/charles4/public_html/WA_eCart/checkoutScripts/WA_simlib.php</b> on line <b>30</b><br />


sounds like your php server does not have the mhash library enabled.

try changing the WA_eCart/checkoutScripts/WA_simlib.php file to use the hash function instead.

change:
return (bin2hex (mhash(MHASH_MD5, $data, $key)));


to:
return (bin2hex (hash(MHASH_MD5, $data, $key)));

Jason-
no wonder I couldn't remember the fix: "mhash" such a strange word. Computer code is so picky! Just remove a single "m" and everything's fine...
Thanks again.
-Jim

glad to here it is working.

Jason,
While that change in code allows the submit button to show, BUT while it connects to Authorize.net, I get an error message from them. After spending several hours on the phone with Authorize.net tech support they narrowed the error to the change in the M5HASH setting having to do with "x_fp_timestamp." They have an tool called "paradump" which displayed this "explanation":

<br /> <b>Notice</b>: Use of undefined constant MHASH_MD5 - assumed 'MHASH_MD5' in <b>/home2/charles4/public_html/WA_eCart/checkoutScripts/WA_simlib.php</b> on line <b>30</b><br /> <br /> <b>Warning</b>: hash() [<a href='plugins/function.hash'>function.hash</a>]: Unknown hashing algorithm: MHASH_MD5 in <b>/home2/charles4/public_html/WA_eCart/checkoutScripts/WA_simlib.php</b> on line <b>30</b><br /> 1308681959

So it appears we need a different fix for getting the buttons to display, or perhaps a different way to send the timestamp info. But whatever, I need to get this resolved immediately. Please, please help me =(

you should contact the host and have them enable the mhash() library on the server. that library defines the mhash function and the MHASH_MD5 constant that are being used by this code.

From: support-level1@contact4.westhost.com
Date: Tue, Jun 21, 2011 8:07 pm
Subject: [#266370] Requesting mhash library

Jim,

Thank you for contacting WestHost Technical Support. Unfortunately it looks like the admins would be unable to install this for your account without changing other accounts on this same server. In order for this to happen you may need to purchase a cloud server, or find an alternative to the mhash library. If you want to describe the issue I can try to give you an alternative or maybe a couple of ideas to help guide you in the right direction. I apologize we weren't able to install this for you, but with the shared servers there isn't much inside of the system that we can change without possibly breaking something.

--
Best regards,

Neal Hansen
Technical Support Representative
WestHost.com

you can try changing the following code in the WA_eCart/checkoutScripts/WA_simlib.php fille:

function hmac ($key, $data)

{

return (bin2hex (mhash(MHASH_MD5, $data, $key)));

}

to:

function hmac ($key, $data) 

{ 

   // RFC 2104 HMAC implementation for php. 

   // Creates an md5 HMAC. 

   // Eliminates the need to install mash to compute a HMAC 

   // Hacked by Lance Rushing 



   $b = 64; // byte length for md5 

   if (strlen($key) > $b) { 

       $key = pack("H*",md5($key)); 

   } 

   $key  = str_pad($key, $b, chr(0x00)); 

   $ipad = str_pad('', $b, chr(0x36)); 

   $opad = str_pad('', $b, chr(0x5c)); 

   $k_ipad = $key ^ $ipad ; 

   $k_opad = $key ^ $opad; 



   return md5($k_opad  . pack("H*",md5($k_ipad . $data))); 

}

if that does not work, you will need to find a host willing to install the mhash library for you.