[pmwiki-users] php8 Problems

[Petko Yotov]

0. Please don't rename pmwiki.php, because it is probable that at some 
point you will forget to update the renamed file and will run with files 
from different releases.

Instead, make a wrapper script, either index.php or what you have i.php 
that contains:

<?php include('pmwiki.php');

1. Please always make a full update of all PmWiki core distribution 
files, not just some files from one release, others from other release. 
This includes pmwiki.php, any files in scripts/, and any core files in 
pub/. The different files contain functions and interfaces that may have 
changes between versions, and may may not work with an earlier or a 
later version.

If you get the pre-release, there is an archive with only the files 
changed since the last release, then you can only replace these files.

There have been many changes in multiple files in the last 5 months 
since 2.3.25, see:

   https://pmwiki.org/ChangeLog


2. The warnings appear to come from Markup expressions.  After you 
update all core files, if you still see these warnings, they are most 
often caused by a recipe or custom configuration that has registered 
some functions to be processed by markupexpr.php at a later point, but 
there is some incompatibility. The reason the warning appears to come 
from markupexpr.php is because the error has become apparent at that 
moment.

The page https://pmwiki.org/Troubleshooting has an entry "How to track 
errors and know if they come from the PmWiki core or from a local 
configuration or addon/recipe" - see if you can follow the steps to find 
out which configuration or recipe causes this.

If you find the markup expression which causes this, let us know and 
we'll try and provide a fix.

Petko


On 14/02/2024 11:55, Martin Cuno wrote:
> Hi everyone,
> 
> I'm trying to switch my PmWiki to php 8, initially locally (UwAmp
> server). I have version 2.3.25, although not out-of-the-box, but with
> many recipes, but I have already switched off some of them. pmwiki.php
> (I've always renamed it "i.php") has already been updated to 2.3.30
> because of the error message, markupexpr.php has remained the same.
> 
> What do these error messages mean:
> 
> Warning: Undefined array key "ctime" in
> C:\A2\UwAmp\www\LGC\i.php(1357) : eval()'d code on line 1
> 
> Warning: Undefined array key 2 in
> C:\A2\UwAmp\www\LGC\scripts\markupexpr.php(111) : eval()'d code on
> line 1
> 
> Warning: Undefined array key 2 in
> C:\A2\UwAmp\www\LGC\scripts\markupexpr.php(111) : eval()'d code on
> line 1
> 
> Thanks! Martin