This is a translation from Spanish to English, but still the best guide I’ve used so far. Modified slightly to help others but could use more work.

Important: ModSecurity blocks lots of UNIX commands. I had to add dots to them. They are colored red so you know to change them.

This article assumes that you have installed a RedHat Enterprise or CentOS and not guaranteed to work, although we have tested on several CentOS 4.5 with success. Read more »

Code Location

• /app/code/core/Mage/Sales/Model/Order/Pdf/Invoice.php
• /app/code/core/Mage/Sales/Model/Order/Pdf/Abstract.php

Changing the font size

Change the font size in the two files:

• /app/code/core/Mage/Sales/Model/Order/Pdf/Abstract.php (line 487-507)
• /app/code/core/Mage/Sales/Model/Order/Pdf/Items/Abstract.php (line 255-274)

Change the invoice logo

• Admin -> Configuration -> Sales -> Invoice and Packing Slip Design

More info

• Changing the invoice size from A4 to letter
• Changing the font from Libertine to Helvetica
• Read up here.

Having problems with the word ” – English” showing up on all your meta titles? Here’s the solution: Read more »

This is a simple PHP4 -> PHP5 error. Make sure the following is in your .htaccess file.

Important: This does not work if you are behind a proxy, which includes antivirus firewalls and such.

• Right click on the hosts file in C:\Windows\System32\drivers\etc
• Go to properties, turn off “read-only“
• Open the file using Notepad or any text editor
• Add a line to the bottom of the file with the IP and domain
• When you are done, don’t forget to turn read-only back on again

Ex.

Use the IP of the new server and then the domain you want that IP to resolve to.

Now you can browse to that domain and it will resolve to the new IP even though the DNS hasn’t been updated yet.

Use &lt; instead of “<” and &gt; instead of “>”.

Or if you’re pasting code into a WYSIWYG editor, just paste into the design view and not the source view. It should automatically convert the characters for you.

Open the file /app/design/frontend/default/default/layout/checkout.xml

Remember if you are using a different theme the path to that file will be slightly different.

Remove this line:

Source

After this module is installed you can request quotes from the Canada Post Sell Online system.

Feature list

• Storage of sellonline information
• Easy setup process
• Easy configuration / setup process
• Add ability to view number of boxes to ship and contents of each box
• Orders from backend may use “Free” shipping method

Get it here.

What:
There’s a feature called “gzip” that’s installed by default on most web servers. Modifying your site to make use of it can really speed up the performance.

How much faster?
Try the quick and easy mod_gzip tester by WhatsMyIP.org. Just enter the URL and it will tell you how much faster it would be.

How to enable it in Wordpress:
It’s easy! Just grab the plugin called Gzippy and install it. Run the gzip tester again to see it in action.

There are a few problems that come from moving an old install of osCommerce to a new server with PHP5 or just simply upgrading from PHP4 to PHP5. Read more »