STEP1: Always obtain a backup before updating #

Save the current openai.php as a file that has already been modified to a working state. For example: save a local copy with a name like openai.php-dify.

We recommend taking a full backup by backing up either the entire WordPress installation or the plugins folder, so that you can restore if anything goes wrong.

STEP2: Update AI Engine #

Update AI Engine (Meow Apps) from the “Plugins” section of the WordPress admin screen, or overwrite the new version via SFTP/SSH, etc.

After updating, confirm that the plugin is activated.

STEP3: Since openai.php will be reset, reapply following these steps #

• • Method A: Manually apply the differences

Refer to the openai.php-dify file from before the modification (confirmed to work), and add or overwrite the relevant sections in the new openai.php (such as build_url(), build_headers(), etc.).

Note that there may be changes added by the AI Engine update, so be careful not to completely replace it. Only manually reproduce the differences.

• • Method B: Use a patch file or Git

Create a patch of the modifications in advance using diff / git.

After updating, apply it as patch < openai.patch, and make the same changes again. This is the most reliable semi-automated method.

• • openai.php after update
    • File path: wp-content/plugins/ai-engine/classes/engines/openai.php

This file should have been replaced with the latest version by the update.

STEP4: Verify that the Dify modifications have been reapplied #

Check the source code to confirm that the modified sections (for example: endpoint = ‘https://your-DIFY-address/e/xxxxxx’ in build_url()) remain correct.

• Test:
  1. Enable WordPress debug mode, actually send a chat message, and check debug.log.
  2. If the request destination to Dify is https://your-DIFY-address/e/xxxx/chat/completions, it’s a success.

If necessary, readjust the model settings or Bearer Key settings (API Key or filters in the admin screen).

STEP5: If there are issues, recheck version differences #

If the internal specifications have changed due to an AI Engine update, you may need to fine-tune the modified sections.

• Check the official update history (changelog) or file differences. If there are major changes to openai.php, the differences may cause conflicts.
• If it doesn’t work well, restore from a previous backup to isolate the cause.

Summary #

• Backup (save the modified openai.php before updating)
• Update AI Engine (from plugin management screen, etc.)
• Reapply
  • Manually insert the differences into openai.php
  • Or apply automatically using a patch file or Git
• Verify operation (confirm that requests are sent to the Dify endpoint)