Upgrading - Reference Guide
Summary of Key Points For Upgrading
Upgrading
Upgrading your store
Why should I upgrade?
About upgrading and why it’s part of running Zen Cart
Standard Upgrade - Recommended Procedure
Upgrading Step By Step – and still keep my live store running in the meantime
Database-Only Upgrade Instructions
Lower cost quickie upgrading
Character Sets
Representing characters outside US ASCII
Checking available PHP Versions
Seeing which PHP versions are available
Configuration Parameter Name Changes
Changes to the names of configuration parameters
Converting from iso-8859-1 to utf8 or utf8mb4
Modern sites should use UTF8 or UTF8MB4
Could not upgrade to version X
Troubleshooting a failed database upgrade
Date standardization
Getting custom date fields set correctly
Fixing broken tables
Common MySQL table issues
Incorrectly defined tables
Updating older table definitions
Installer does not show an Upgrade button
I only see the Clean Install button
JavaScript Libraries
Keeping your JavaScript libraries current
Language Files - Shortcut
Simplifying your 1.5.8 Language file updates
Long field indexes
Creating indexes on long fields
Mixed Collation Errors
How to handle “Illegal mix of collations” after upgrade
Multiple PHP Versions
Running more than one version of PHP
Old database convertions script (deprecated)
Notes on utf8mb4-conversion.php
PHP Errors, Warnings and Deprecated messages after upgrading
How to fix the most common PHP7+ messages
PHP Version and Configuration
Changing PHP version or PHP Settings
Release Specific Upgrade Considerations
Watch for these changes if you are upgrading and preserving customizations
The PHP Lifecycle
How PHP evolves
Unknown column error after upgrade
Post-upgrade blank screen when adding a record
Updating your PHP Version
Moving to a higher PHP version after an upgrade
Upgrading and Templates
What to do with your template during an upgrade
Do you have a suggestion for a FAQ? Please post it to General Questions on the support forum.
Last modified August 31, 2020 by Scott C Wilson (ecbf3b52).