48. Fix parameters in human-readable urls
https://github.com/MioVisman/punbb/comm … 64fad0f682

1. Removed mb_convert_encoding() (this is an encoding conversion, not a character conversion) and utf8_decode() (inferior to the initial conversion strtr($str, $lang_url_replace)). There is no point in using them.
2. The transliterator will be called only if a character not belonging to the basic Latin is found in the string.
3. The transliterator_transliterate() function has been replaced with creating a transliterator, since this function creates a new transliterator each time, which on some systems (probably where there are old ICU libraries) can significantly slow down the script ( https://forkbb.ru/post/286#p286 )

https://github.com/MioVisman/punbb/comm … 276dfa7519
https://github.com/MioVisman/punbb/comm … b965c069f9

41. Update install
https://github.com/MioVisman/punbb/comm … f0e71a9e1b
https://github.com/MioVisman/punbb/comm … 1b8f09dbdd
https://github.com/MioVisman/punbb/comm … ed5db23ab3
https://github.com/MioVisman/punbb/comm … c9bfcfea68

42. Fix db_update
https://github.com/MioVisman/punbb/comm … 76e0d2853d

43. Minor/secur updates
https://github.com/MioVisman/punbb/comm … 69a0104ace
https://github.com/MioVisman/punbb/comm … 9b0cd7525e
https://github.com/MioVisman/punbb/comm … 8af03fb5d0
https://github.com/MioVisman/punbb/comm … 08b760a9dd
https://github.com/MioVisman/punbb/comm … a3ce66ef5e
https://github.com/MioVisman/punbb/comm … 8c95dc4cba
https://github.com/MioVisman/punbb/comm … a8a8d54fb1

44. Fix for PHP 8.2
https://github.com/MioVisman/punbb/comm … 4c3ebd87e3

45. Again trying to solve the “database is locked” problem for SQLite  (Change transaction mode for multithreaded mode.)
https://github.com/MioVisman/punbb/comm … c8b1d5d659

eval()'d code on line

Extension failed. Turn them off one at a time to find the culprit.

The rest of the site displays correctly.
The error disapears when I go back to php 7.4.

What should I look at ? Should I make a clean install and then manage to use my sqlite file ?

In PunBB 1.4.6, they simply removed the ability to insert other bbcodes into email bbcode. Rearranging the processing of email bbcode above does not play any role. (UPDATE: Here I was wrong. The permutation affected the display of the email bbcode if there is another bbcode inside it. )
I, in the 39th fix, encode the email which is inserted into the href attribute via the rawurlencode() function. As a result, even if there were some bbcodes, they will no longer be converted to html.

Example:

[email]%3Cscript%3Ealert%281%29%3C%2Fscript%3E@examle.com[/email]
[email]my.super.puper<>email@mail.com[/email]
[email=<b>ffff</b>@<b>ffff</b>][b]test email and bbcode[/b][/email]

[email=javascript:alert(1)]<script>alert(2)</script>[/email]
[email]<script>alert(2)</script>[/email]

-->

<a href="mailto:%3Cscript%3Ealert%281%29%3C%2Fscript%3E@examle.com">%3Cscript%3Ealert%281%29%3C%2Fscript%3E@examle.com</a><br />
<a href="mailto:my.super.puper%26lt%3B%26gt%3Bemail@mail.com">my.super.puper&lt;&gt;email@mail.com</a><br />
<a href="mailto:%26lt%3Bb%26gt%3Bffff%26lt%3B%2Fb%26gt%3B@%26lt%3Bb%26gt%3Bffff%26lt%3B%2Fb%26gt%3B"><strong>test email and bbcode</strong></a>

<a href="mailto:javascript%3Aalert%281%29">&lt;script&gt;alert(2)&lt;/script&gt;</a><br />
<a href="mailto:%26lt%3Bscript%26gt%3Balert%282%29%26lt%3B%2Fscript%26gt%3B">&lt;script&gt;alert(2)&lt;/script&gt;</a>

P.S. And I repeat once again: I have doubts about the possibility of the existence of XSS.
P.P.S. Why then url bbcode is not changed. There is a similar situation
P.P.P.S. If I'm not clear, Google Translate is to blame

UP 2021-03-13

38. Fix search (Uncaught Error: mysqli_result object is already closed in ...) for PHP 8
https://github.com/MioVisman/punbb/comm … f11550a9ef

UP 2021-03-17

39. Change email bbcode
https://github.com/MioVisman/punbb/comm … 547f79e3d1

    (P.S. Change the handler so that the html validator doesn't swear at bad emails addresses.)
    (P.P.S. I doubt that XSS can exist where all the text characters ', ", < and > are replaced with html entities.)
    (P.P.P.S. In PunBB 1.4.6, everything is done wrong )

With the last sentence saying everything is done wrong in PunBB 1.4.6, you've answered my question :
https://punbb.informer.com/forums/topic … by-visman/

It seems that your version is still the better one and more updated

28. Fix get_table_info() method in SQLite3 driver
https://github.com/MioVisman/punbb/comm … c30abb582b

29. Fix for PHP 8
https://github.com/MioVisman/punbb/comm … 212c48614e
https://github.com/MioVisman/punbb/comm … e74f866ab3

30. Change get_tracked_topics() function
https://github.com/MioVisman/punbb/comm … 98a7c356c0

31. Add SameSite for setcookie()
https://github.com/MioVisman/punbb/comm … d143a67747

32. Change the color of the button for the report to the cautious
https://github.com/MioVisman/punbb/comm … fb2e0f58d0

33. Fix pattern for ip
https://github.com/MioVisman/punbb/comm … b8169a08db

34. Update .htaccess.dist (Add security headers)
https://github.com/MioVisman/punbb/comm … 2c29f5c5ca

35. Security: Update random_key() function for PHP7+
https://github.com/MioVisman/punbb/comm … 6aead51b4e

36. Add canonical link for topic pages (To remove duplicate pages, if any.)
https://github.com/MioVisman/punbb/comm … 1b22f76809

37. There is a need to censor navigation links
https://github.com/MioVisman/punbb/comm … 3ab7684e69

UP 2021-03-13

38. Fix search (Uncaught Error: mysqli_result object is already closed in ...) for PHP 8
https://github.com/MioVisman/punbb/comm … f11550a9ef

UP 2021-03-17

39. Change email bbcode
https://github.com/MioVisman/punbb/comm … 547f79e3d1

    (P.S. Change the handler so that the html validator doesn't swear at bad emails addresses.)
    (P.P.S. I doubt that XSS can exist where all the text characters ', ", < and > are replaced with html entities.)
    (P.P.P.S. In PunBB 1.4.6, everything is done wrong )

<p><span style=\"background-color: $matches[1]\">$matches[2]</span></p>

But there is no such code in the parser.

The code for the bb-code H in the parser is as follows:

</p><h5>$1</h5><p>

Read this post for more bb codes: https://punbb.informer.com/forums/post/158390/#p158390