Hello,

See my tentative fix at https://github.com/pear/PHP_Archive/pull/4.
Not sure if this is the only issue affecting PHP 8.0.0 compatibility or not.

I just hope the package's maintainers can release a fixed PHAR archive soon because I also would like to use PHP 8 and pear together.

Regards,
François

Fatal error: Uncaught TypeError: Unsupported operand types: array & int in /install_dir/php-8.0.3/pear/install-pear-nozlib.phar:517
Stack trace:
#0 /install_dir/php-8.0.3/pear/install-pear-nozlib.phar(454): PHP_Archive::_unserializeManifest('F\x00\x00\x00\x11\x00\x00\x00\x01\x00\x18\x00\x00\x00i...')
#1 /install_dir/php-8.0.3/pear/install-pear-nozlib.phar(414): PHP_Archive::_mapPhar('/OriginSystemsD...', 43987)
#2 /install_dir/php-8.0.3/pear/install-pear-nozlib.phar(1164): PHP_Archive::mapPhar(NULL, 43987)
#3 {main}
  thrown in /install_dir/php-8.0.3/pear/install-pear-nozlib.phar on line 517
make[1]: *** [install-pear-installer] Error 255
make: *** [install-pear] Error 2

https://www.php.net/manual/en/oci8.installation.php

pecl install oci8

Requires pear....

but PHP 8 compilation using  --with-pear=shared

Results in this failure:

Fatal error: Uncaught TypeError: Unsupported operand types: array & int in /install_dir/php-8.0.3/pear/install-pear-nozlib.phar:517
Stack trace:
#0 /install_dir/php-8.0.3/pear/install-pear-nozlib.phar(454): PHP_Archive::_unserializeManifest('F\x00\x00\x00\x11\x00\x00\x00\x01\x00\x18\x00\x00\x00i...')
#1 /install_dir/php-8.0.3/pear/install-pear-nozlib.phar(414): PHP_Archive::_mapPhar('/OriginSystemsD...', 43987)
#2 /install_dir/php-8.0.3/pear/install-pear-nozlib.phar(1164): PHP_Archive::mapPhar(NULL, 43987)
#3 {main}
  thrown in /install_dir/php-8.0.3/pear/install-pear-nozlib.phar on line 517
make[1]: *** [install-pear-installer] Error 255
make: *** [install-pear] Error 2


Trying to install install PHP 8, then subsequently pear (for linux) via

https://pear.php.net/manual/en/installation.getting.php

Results in: 

php go-pear.phar

Warning: Private methods cannot be final as they are never overridden by other classes in /root/go-pear.phar on line 339

Fatal error: Uncaught TypeError: Unsupported operand types: array & int in /root/go-pear.phar:517
Stack trace:
#0 /root/go-pear.phar(454): PHP_Archive::_unserializeManifest('F\x00\x00\x00\x11\x00\x00\x00\x01\x00\f\x00\x00\x00g...')
#1 /root/go-pear.phar(414): PHP_Archive::_mapPhar('/root/go-pear.p...', 43879)
#2 /root/go-pear.phar(1164): PHP_Archive::mapPhar(NULL, 43879)
#3 {main}
  thrown in /root/go-pear.phar on line 517

This Unsupported operand types: array & int problem is preventing our upgrade to PHP 8.

And it has been in existence at least 17th July 2020.

I simply cannot believe it has existed for so long without being sorted out.

This has apparently been fixed a while ago.

This problem still exists in PHP 8.0.8:

Installing man pages:             /opt/php8/share/man/man1/
  page: phpize.1
  page: php-config.1
Installing PEAR environment:      %{phpconfdir}/pear/php/

Fatal error: Uncaught TypeError: Unsupported operand types: array & int in /home/liam/downloads/php8/php-8.0.8/pear/install-pear-nozlib.phar:517
Stack trace:
#0 /home/liam/downloads/php8/php-8.0.8/pear/install-pear-nozlib.phar(454): PHP_Archive::_unserializeManifest('F\x00\x00\x00\x11\x00\x00\x00\x01\x00\x18\x00\x00\x00i...')
#1 /home/liam/downloads/php8/php-8.0.8/pear/install-pear-nozlib.phar(414): PHP_Archive::_mapPhar('/home/liam/dow...', 43987)
#2 /home/liam/downloads/php8/php-8.0.8/pear/install-pear-nozlib.phar(1164): PHP_Archive::mapPhar(NULL, 43987)
#3 {main}
  thrown in /home/liam/downloads/php8/php-8.0.8/pear/install-pear-nozlib.phar on line 517
make[1]: *** [install-pear-installer] Error 255
make: *** [install-pear] Error 2

According to <https://github.com/pear/PHP_Archive/pull/4>, this
issue has been fixed, but maybe there are more such cases.

Anyhow, there appears to be an issue with PEAR.
<https://pear.php.net/install-pear-nozlib.phar> still has
Archive_Tar 1.4.9, although 1.4.13 is latest, so php-src
distributes the old version.

Maybe Christian can help?

I have the pearweb_phars updated on the PEAR website... v1.10.20 now contains the updated Archive_Tar v1.4.14.

See if this solves your issue.

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.

In case it's appropriate to tack on this bug report, I encountered these two warnings but was able to proceed with installation when using PHP 8.0.10 to install pear (using go-pear.phar taken from pearweb_phars-1.10.21).

PHP Warning:  Private methods cannot be final as they are never overridden by other classes in C:\PHP\php-8.0.10-Win32-vs16-x64\go-pear.phar on line 339

Warning: Private methods cannot be final as they are never overridden by other classes in C:\PHP\php-8.0.10-Win32-vs16-x64\go-pear.phar on line 339