Modifying thread content

[stanleys]

I'm interesting in modifying new threads by altering the thread content via a PHP function.
What is the best approach for implementing something of this nature?

[Opserty]

What do you mean by thread content? The posts in the thread? All the posts? You'll need to add a plugin to a hook on the showthread.php page most likely.

[stanleys]

Sorry for the confusion, I was referring to the content of the first main post in a thread.

Is it difficult to show the original version of the post in the edit box, but an altered version of the post to the thread viewer?