# PHP 8.4.21RC1 Ready for testing

- Thread: https://externals.io/message/130687
- Original archive: https://news-web.php.net/php.internals/130687
- Started by Calvin Buckley on 2026-04-23T19:53:57+00:00
- Messages: 1
- Reply by email to internals@lists.php.net
- More for agents: search with https://externals.io/search.md?q={query} · RFCs at https://externals.io/rfc.md · JSON API at https://externals.io/api · documentation at https://externals.io/llms.txt

---

## #130687 — Calvin Buckley — 2026-04-23T19:53:57+00:00

URL: https://externals.io/message/130687#130687

PHP 8.4.21RC1 has just been released and may be downloaded from
https://downloads.php.net/~calvinb/

Or use the git tag: php-8.4.21RC1

Windows binaries are available at: https://www.php.net/pre-release-builds.php#windows

Please test it carefully, and report any bugs at https://github.com/php/php-src/issues

8.4.21 should be expected in 2 weeks, i.e. on the 7th.

Hash values and PGP signatures can be found below or at
https://gist.github.com/NattyNarwhal/2bf59791bd5e09f6c7b5b98c55a84b39

Thank you, and happy testing!

Regards,
Calvin Buckley, Saki Takamachi, and Eric Mann



php-8.4.21RC1.tar.bz2
SHA256 hash: 92be1ab180946fb6fe21456cfae08190fe556fb643d56043bd56f034ae145368
PGP signature:
-----BEGIN PGP SIGNATURE-----

iJEEABYKADkWIQSdf5mgy48FyKaVjWJWqXr3YAo5pgUCaeehshsUgAAAAAAEAA5t
YW51MiwyLjUrMS4xMSwwLDMACgkQVql692AKOabB6AEA0m8SfXYY37qj0AY5Dg/q
wjHUnhrUvzh0lrcHQD7BUZMBAJSM6OecwxT+fgz50b/guz7mgnJNLOOH02p6aiVP
FZcE
=s2Y5
-----END PGP SIGNATURE-----


php-8.4.21RC1.tar.gz
SHA256 hash: e4c3eb09b3948bda0a0e41c73424a73c1d3ca6c7ee81efb22f26f07cb7476929
PGP signature:
-----BEGIN PGP SIGNATURE-----

iJEEABYKADkWIQSdf5mgy48FyKaVjWJWqXr3YAo5pgUCaeehshsUgAAAAAAEAA5t
YW51MiwyLjUrMS4xMSwwLDMACgkQVql692AKOabNggEAxisNSy/zWE1g4efIvBMn
TUrLzBvyVMUeD/jj4buwue8BAIHXC/D7Zi5i1t21D8xKLTUkyU8Uf5sTWYIXluqT
2GAO
=JyLs
-----END PGP SIGNATURE-----


php-8.4.21RC1.tar.xz
SHA256 hash: c1a77cbbfe2dc7dd37b11f88ff68f112dbed6eaa9ba2d232e0a1b57852c93096
PGP signature:
-----BEGIN PGP SIGNATURE-----

iJEEABYKADkWIQSdf5mgy48FyKaVjWJWqXr3YAo5pgUCaeehshsUgAAAAAAEAA5t
YW51MiwyLjUrMS4xMSwwLDMACgkQVql692AKOaatkAD9HzOE7TFKGfY+XanuEsQg
BaiRbpWgVwLhnHn0Ki1yU5gA/08S7dv8iNELqx+6ff/vUs5f9kh0fGPMPojJmTtJ
CZQO
=n3/7
-----END PGP SIGNATURE