phpredis extension doesn't work, unable to load 'redis.so'

redis php-extension phpredis
pearzl picture pearzl · Nov 30, 2015 · Viewed 18.1k times · Source

I installed nginx, php, php-fpm, php-pecl-redis by yum.

All of them work but the last one.

When I run /usr/sbin/php-fpm, I got this:

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/redis.so' - /usr/lib/php/modules/redis.so: undefined symbol: igbinary_unserialize in Unknown on line 0

I don't know what igbnary_unserialize means and how to fix it.

I checked the redis.so file under right path. I add extension=redis.so to php.ini

PHP version: 5.3.3

PhpRedis version: 2.2.7

Answer

Matt Setter picture Matt Setter · May 19, 2017

I had the same issue. I'm on Ubuntu 16.04 LTS. Running sudo apt-get install php-igbinary resolved the issue for me. I have other issues, but that's what solved this one.

Related questions

How do I run Redis on Windows?

How do I run Redis on Windows? The Redis download page just seems to offer *nix options. Can I run Redis natively on Windows?

Read More
Memcached vs. Redis?

We're using a Ruby web-app with Redis server for caching. Is there a point to test Memcached instead? What will give us better performance? Any pros or cons between Redis and Memcached? Points to consider: Read/write speed. Memory usage. …

Read More
How can I stop redis-server?

I apparently have a redis-server instance running because when I try to start a new server by entering redis-server, I'm greeted with the following: Opening port: bind: Address already in use I can't figure out how to stop this server …

Read More