There is nothing between the versions 2.2.81 and 2.2.91 that could cause the appearance of the warning. More likely, your hosting provider has upgraded the PHP installation to PHP 5.5 or newer.

The problem is probably in some recipe(s), skin or custom markup definition(s). See the page Troubleshooting about how to track it:

  http://www.pmwiki.org/wiki/PmWiki/Troubleshooting

If your skin and recipes have more recent PHP5 compatible versions, install those. Otherwise, ask their authors to fix them. If this fails, and if the skin or recipe have a license that permits modification and redistribution, we can fix the recipes ourselves.

Petko

---
Change log     :  http://www.pmwiki.org/wiki/PmWiki/ChangeLog
Release notes  :  http://www.pmwiki.org/wiki/PmWiki/ReleaseNotes
If you upgrade :  http://www.pmwiki.org/wiki/PmWiki/Upgrades


On 2016-11-06 18:15, Donald Z. Osborn wrote:
Greetings, Belatedly upgraded from 2.2.81 to 2.2.91 but ran into some
problems. As I usually do, I just copied over the files updated since the
previous update on my site. However this time there is an error message
(actually a whole string of them). See for example
http://donosborn.org/work/ where you'll see:

The /e modifier is deprecated, use preg_replace_callback instead in <site
structure here>/pmwiki.php on line 1718

Any suggestions where the problem is?

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