Title: Source code modifications and updates
Last modified: August 31, 2016

---

# Source code modifications and updates

 *  [mjpecp](https://wordpress.org/support/users/mjpecp/)
 * (@mjpecp)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/source-code-modifications-and-updates/)
 * My site is three years old, and I’m no longer in contact with its developer. 
   I’m not sure if he modified its source code, but I have some problems which are
   difficult to explain. I don’t get them on a test site I recently set up with 
   most of the same settings and plugins. So, my questions are :
 * Do old source code modifications survive WordPress updates? (I’ve certainly updated
   WP several times since I lost contact with the developer.)
 * And if so, how can I discover if my source code has been modified?
 * I’m sorry for asking these beginner’s questions, but it’s important for me to
   have an answer. I’d appreciate all help!
 * Thanks!

Viewing 1 replies (of 1 total)

 *  [catacaustic](https://wordpress.org/support/users/catacaustic/)
 * (@catacaustic)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/source-code-modifications-and-updates/#post-7175880)
 * > Do old source code modifications survive WordPress updates?
 * No. Any changes to core files are over-written when the site updates.
 * > And if so, how can I discover if my source code has been modified?
 * There’s various tools around that can check files for differences. Most will 
   do this file-by-file, but that would be pretty tedious for all of the files in
   the WordPress system. There’s probably some that can do drectories or groups 
   of files, so I’d look for something that can support that.
 * If the core code was modified, and you’ve updated, you won’t be able to see the
   changes any logner anyway as they’ll all be over-written with the new versions
   code, so trying to find where changes are would be pretty futile.

Viewing 1 replies (of 1 total)

The topic ‘Source code modifications and updates’ is closed to new replies.

## Tags

 * [source-code](https://wordpress.org/support/topic-tag/source-code/)
 * [update](https://wordpress.org/support/topic-tag/update/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [catacaustic](https://wordpress.org/support/users/catacaustic/)
 * Last activity: [10 years, 2 months ago](https://wordpress.org/support/topic/source-code-modifications-and-updates/#post-7175880)
 * Status: not resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics