I've recently sent a pull request https://github.com/php/php-src/pull/3913,
to add a new hashing algorithm, http://php.net/manual/en/function.hash.php
specific crc32c (Castagnoli's polynomial). This variant of crc32 is heavily
used by storage systems, such as iSCSI, SCTP, Btrfs, ext4, and is
increasingly being used in APIs (such as Google Cloud Storage, and Apache
The hash algorithm is small, and self contained. It cleaning merges against
master, and the 7.2 branch. It was suggested that in addition to merging to
7.4, I could get approval to merge into 7.3 and maybe 7.2.
This email is to get approval for which versions it can be merged into.