Troubleshooting “Permission denied” when attempting to connect to Redis from PHP script

Problem solved, type:

/usr/sbin/setsebool httpd_can_network_connect=1

By default, SELinux does not allow Apache to make socket connections. More information can be found here.

source: https://stackoverflow.com/questions/8765848/troubleshooting-permission-denied-when-attempting-to-connect-to-redis-from-php