PHP 8.1-rc5 fail with any preg_*() function

[joanhey]

Frequently asked questions

• I have read Frequently Asked Questions

Describe the bug

All preg_*() functions fail with:
Compilation failed: unrecognised compile-time option bit(s) at offset 0 in file ...

Almost with preg_match(), preg_match_all(), preg_split() and preg_replace().

It's failing with all the php frameworks in https://github.com/TechEmpower/FrameworkBenchmarks

To Reproduce
Steps to reproduce the behavior:

Use this docker file:
https://github.com/TechEmpower/FrameworkBenchmarks/blob/fe90508e82feb91a0bb72e94e75865609517b2b1/frameworks/PHP/php/php.dockerfile

And try to use any preg_*() function.

With php 8.0 is working without problems.

Distribution (please complete the following information):

• OS: Docker with Ubuntu 20.04
• Architecture: amd64
• Repository: Ubuntu PPA

[oerdnj]

Seems like dup of #1674 to me.

[joanhey]

Don't look like a php bug.

It's working in https://3v4l.org/rJvkX#v8.1rc3 and with any docker image php:8.1-rc.

Only fail when using these packages.

Extra info: when php8.1-dev is installed the preg_*() has no errors.

[oerdnj]

Have you actually read the other issue? Especially the part about pcre2 libraries?

[joanhey]

Yes, but it's only necessary to add php8.1-dev and it will work without problems. Without update the pcre2 libs.

But why with php8.1-dev is working and not with only php-8.1 or php8.1-common

[oerdnj]

What are the pcre2 library versions on system where it works and what are the versions where it doesn't?

[oerdnj]

E.g. is you system fully upgraded when you are testing the issue?

[sleemanj]

The dockerfile does not do an upgrade, only an update, that will be your problem @joanhey the focal tarball that the docker image is constructed from (as I understand it) was generated way back on the 6/7th of October.

I don't use docker, but I just spun up a fresh 20.04 EC2 instance, an initial update & upgrade brings in

The following packages will be upgraded:
   libargon2-1 libidn2-0 libpcre2-8-0 libpcre3 libxml2 libzstd1

And 8.1 CLI works...

$ php8.1 -r "echo preg_replace('/fubar/', 'hello world', ' fubar ');"
hello world

[joanhey]

Using inside a docker with ubuntu:20.04:

Update the docker file to use php8.1:
joanhey/FrameworkBenchmarks@8819d83

And appear these errors:
https://github.com/joanhey/FrameworkBenchmarks/runs/4176964544?check_suite_focus=true#step:9:799

Add php8.1-dev, without update pcre libs:
joanhey/FrameworkBenchmarks@a453b6d

and it don't have errors:
https://github.com/joanhey/FrameworkBenchmarks/runs/4177163628?check_suite_focus=true#step:9:800

That happens with all frameworks.
Using docker php:8.1-rc is working OK, but NOT when using the ppa:ondrej/php with ubuntu:20.04 without the php8.1-dev.

[sleemanj]

https://github.com/TechEmpower/FrameworkBenchmarks/blob/fe90508e82feb91a0bb72e94e75865609517b2b1/frameworks/PHP/php/php.dockerfile#L5

As above, you are missing an upgrade here.

[joanhey]

Yes, but php8.1-dev update the pcre libs (I think).

But not when using only php8.1 or php8.1-common (Why ?).

[oerdnj]

Did you come for help or to argue? I can't tell anymore...

[joanhey]

I try to help.

I understand that the correct way will be to upgrade the docker.

But if php8.1 update the pcre libs, like do php8.1-dev. Nobody will ask for this question again.

Thank you for your hard work and sorry for use your time.