I have a project based on drupal 6. I installed php5.6 and redis and php-redis on ubuntu. Now, when I run my project, faced 'Class 'Predis\Client' not found in'.
also my redis config in setting file is like this:
$conf['redis_client_interface'] = 'Predis';
$conf['cache_backends'][] = 'sites/all/modules/redis/redis.autoload.inc';
$conf['cache_class_cache'] = 'Redis_Cache';
$conf['cache_class_cache_menu'] = 'Redis_Cache';
$conf['cache_class_cache_drupal_get_filename'] = 'Redis_Cache';
$conf['cache_class_cache_bootstrap'] = 'Redis_Cache';
$conf['cache_class_cache_path'] = 'Redis_Cache';
$conf['cache_class_cache_field'] = 'Redis_Cache';
$conf['cache_class_cache_views'] = 'Redis_Cache';
$conf['cache_class_cache_admin_menu'] = 'Redis_Cache';
$conf['lock_inc'] = 'sites/all/modules/redis/redis.lock.inc';