RedisClient.php

<?php
/**
 * Custom redis client class to be able to set a custom prefix for every key
 *
 * @see https://github.com/nicolasff/phpredis
 **/
class RedisClient extends Redis {

/**
 * Default prefix
 *
 * @var string
 **/
  protected $_prefix = null;

/**
 * Constructor.
 *
 * @param array $config
 *  - prefix: string to be prefixed to all keys
 *  - port
 *  - hostname
 *
 * @return void
 **/
	public function __construct($config = array()) {
		parent::__construct();

		if (isset($config['prefix'])) {
			$this->_prefix = $config['prefix'];
		}

		$port = isset($config['port']) ? $config['port'] : null;
		$this->pconnect($config['host'], $port);
		$this->setOption(Redis::OPT_PREFIX, $this->_prefix);
	}

/**
 * Clears all keys under configured prefix
 *
 * @return void
 **/
	public function clear() {
		$this->setOption(Redis::OPT_PREFIX, null);
		$this->delete($this->keys(sprintf('%s*', $this->_prefix)));
		$this->setOption(Redis::OPT_PREFIX, $this->_prefix);
	}

}