Here is a small comparison of the various solutions to use a Redis database from PHP on Linux
All the tests have be run on Fedora 25 but should work on RHEL, CentOS or any other distribution.
Tested solutions:
- redis extension (see #1)
- Predis library (see #2)
- phpiredis extension (see #3)
- Predis library with phpiredis extension (see #4)