<?php
require 'vendor/autoload.php';
Predis\Autoloader::register();
$client = new Predis\Client(array('host' => '127.0.0.1', 'port' => 6379), array('prefix' => 'php:'));
$client->set("string:my_key", "Hello World");
$client->get("string:my_key");
# "Hello World"
$client->incr("string:counter");
$client->mget(array("string:my_key", "string:counter"));
# array('Hello World', '2')
$client->rpush("list:my_list", "item1", "item2");
$client->lpop("list:my_list");
# 'item1'
$client->hset("set:redis_book", "title", "Redis Essentials");
$client->hgetall("set:redis_book");
# array('title' => 'Redis Essentials')
$client->sadd("set:users", "alice", "bob");
$client->smembers("set:users");
# array('bob', 'alice')
$client->zadd("sorted_set:programmers", 1940, "Alan Kay");
$client->zadd("sorted_set:programmers", 1912, "Alan Turing");
$client->zrange("sorted_set:programmers", 0, -1, "withscores");
# array('Alan Turing' => 1912, 'Alan Kay' => 1940)
/**
*/
protected function _get($keys)
{
$keys = array_values($keys);
$out = array();
try {
$data = $this->_predis->mget($keys);
} catch (Exception $e) {
/* MGET doesn't work on clusters. */
$data = array();
foreach ($keys as $key) {
$data[$key] = $this->_predis->get($key);
}
}
foreach ($data as $key => $val) {
$out[$keys[$key]] = is_null($val) ? false : $val;
}
return $out;
}
<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <*****@*****.**>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
require 'SharedConfigurations.php';
// redis can set keys and their relative values in one go
// using MSET, then the same values can be retrieved with
// a single command using MGET.
$mkv = array('usr:0001' => 'First user', 'usr:0002' => 'Second user', 'usr:0003' => 'Third user');
$client = new Predis\Client($single_server);
$client->mset($mkv);
$retval = $client->mget(array_keys($mkv));
print_r($retval);
/* OUTPUT:
Array
(
[0] => First user
[1] => Second user
[2] => Third user
)
*/
/**
* Retrieve multiple values from cache.
*
* Gets multiple values from cache, including across multiple groups
*
* Usage: array( 'group0' => array( 'key0', 'key1', 'key2', ), 'group1' => array( 'key0' ) )
*
* Mirrors the Memcached Object Cache plugin's argument and return-value formats
*
* @param array $groups Array of groups and keys to retrieve
* @uses this::filter_redis_get_multi()
* @return bool|mixed Array of cached values, keys in the format $group:$key. Non-existent keys null.
*/
public function get_multi($groups)
{
if (empty($groups) || !is_array($groups)) {
return false;
}
// Retrieve requested caches and reformat results to mimic Memcached Object Cache's output
$cache = array();
foreach ($groups as $group => $keys) {
if (in_array($group, $this->no_redis_groups) || !$this->redis_status()) {
foreach ($keys as $key) {
$cache[$this->build_key($key, $group)] = $this->get($key, $group);
}
} else {
// Reformat arguments as expected by Redis
$derived_keys = array();
foreach ($keys as $key) {
$derived_keys[] = $this->build_key($key, $group);
}
// Retrieve from cache in a single request
$group_cache = $this->redis->mget($derived_keys);
// Build an array of values looked up, keyed by the derived cache key
$group_cache = array_combine($derived_keys, $group_cache);
// Restores cached data to its original data type
$group_cache = array_map(array($this, 'maybe_unserialize'), $group_cache);
// Redis returns null for values not found in cache, but expected return value is false in this instance
$group_cache = array_map(array($this, 'filter_redis_get_multi'), $group_cache);
$cache = array_merge($cache, $group_cache);
}
}
// Add to the internal cache the found values from Redis
foreach ($cache as $key => $value) {
if ($value) {
$this->cache_hits++;
$this->add_to_internal_cache($key, $value);
} else {
$this->cache_misses++;
}
}
return $cache;
}
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <*****@*****.**>
*
* For the full copyright and license info, please view the LICENSE
* file that was distributed with this source code.
*/
require 'SharedConfigurations.php';
// Predis ships with a KeyPrefixProcessor class that is used to transparently
// prefix each key before sending commands to Redis, even for complex commands
// such as SORT, ZUNIONSTORE and ZINTERSTORE. Key prefixes are useful to create
// user-level namespaces for you keyspace, thus eliminating the need for separate
// logical databases.
$client = new Predis\Client($single_server, array('prefix' => 'nrk:'));
$client->mset(array('foo' => 'bar', 'lol' => 'wut'));
var_dump($client->mget('foo', 'lol'));
/*
array(2) {
[0]=> string(3) "bar"
[1]=> string(3) "wut"
}
*/
var_dump($client->keys('*'));
/*
array(2) {
[0]=> string(7) "nrk:foo"
[1]=> string(7) "nrk:lol"
}
*/
* file that was distributed with this source code.
*/
require __DIR__ . '/shared.php';
$client = new Predis\Client($single_server);
// Plain old SET and GET example...
$client->set('library', 'predis');
$response = $client->get('library');
var_export($response);
echo PHP_EOL;
/* OUTPUT: 'predis' */
// Redis has the MSET and MGET commands to set or get multiple keys in one go,
// cases like this Predis accepts arguments for variadic commands both as a list
// of arguments or an array containing all of the keys and/or values.
$mkv = array('uid:0001' => '1st user', 'uid:0002' => '2nd user', 'uid:0003' => '3rd user');
$client->mset($mkv);
$response = $client->mget(array_keys($mkv));
var_export($response);
echo PHP_EOL;
/* OUTPUT:
array (
0 => '1st user',
1 => '2nd user',
2 => '3rd user',
) */
// Predis can also send "raw" commands to Redis. The difference between sending
// commands to Redis the usual way and the "raw" way is that in the latter case
// their arguments are not filtered nor responses coming from Redis are parsed.
$response = $client->executeRaw(array('MGET', 'uid:0001', 'uid:0002', 'uid:0003'));
var_export($response);
echo PHP_EOL;
/* OUTPUT:
// Check entry value.
echo ">>> Value for 'k1': " . $redis->get('k1') . "\n";
// Change entry's value.
if ($redis->set('k1', 'new_value')) {
echo ">>> Successfully put entry in cache. \n";
}
// Check entry value.
echo ">>> Value for 'k1': " . $redis->get('k1') . "\n";
// Put entry to cache.
if ($redis->set('k2', '2')) {
echo ">>> Successfully put entry in cache. \n";
}
// Check entry value.
echo ">>> Value for 'k2': " . $redis->get('k2') . "\n";
// Get two entries.
$val = $redis->mget('k1', 'k2');
echo ">>> Value for 'k1' and 'k2': " . var_dump($val) . "\n";
// Delete on entry.
if ($redis->del('k1')) {
echo ">>> Successfully deleted 'k1'. \n";
}
// Db size.
echo ">>> Db size: " . $redis->dbsize() . "\n";
// Increment.
echo ">>> Incremented: " . $redis->incr("inc_k") . "\n";
// Increment by 5.
echo ">>> Incremented: " . $redis->incrby("inc_k", 5) . "\n";
} catch (Exception $e) {
echo ">>> Couldn't connected to Redis.";
echo $e->getMessage();
}
<?php
require_once 'SharedConfigurations.php';
// redis can set keys and their relative values in one go
// using MSET, then the same values can be retrieved with
// a single command using MGET.
$mkv = array('usr:0001' => 'First user', 'usr:0002' => 'Second user', 'usr:0003' => 'Third user');
$redis = new Predis\Client($single_server);
$redis->mset($mkv);
$retval = $redis->mget(array_keys($mkv));
print_r($retval);
/* OUTPUT:
Array
(
[0] => First user
[1] => Second user
[2] => Third user
)
*/
<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <*****@*****.**>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
require __DIR__ . '/shared.php';
// Predis can prefix keys found in commands arguments before sending commands to
// Redis, even for complex commands such as SORT, ZUNIONSTORE and ZINTERSTORE.
// Prefixing keys can be useful to create user-level namespaces for you keyspace
// thus reducing the need for separate logical databases in certain scenarios.
$client = new Predis\Client($single_server, array('prefix' => 'nrk:'));
$client->mset(array('foo' => 'bar', 'lol' => 'wut'));
var_export($client->mget('foo', 'lol'));
/*
array (
0 => 'bar',
1 => 'wut',
)
*/
var_export($client->keys('*'));
/*
array (
0 => 'nrk:foo',
1 => 'nrk:lol',
)
*/
