D-Net

<?php

/*

 * This file is part of the Predis package.

 *

 * (c) Daniele Alessandri <suppakilla@gmail.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

require 'SharedConfigurations.php';

// This example will not work with versions of Redis < 2.6.

//

// Additionally to the EVAL command defined in the current development profile, the new

// Predis\Command\ScriptedCommand base class can be used to build an higher abstraction

// for our "scripted" commands so that they will appear just like any other command on

// the client-side. This is a quick example used to implement INCREX.

use Predis\Command\ScriptedCommand;

class IncrementExistingKeysBy extends ScriptedCommand

{

    public function getKeysCount()

    {

        // Tell Predis to use all the arguments but the last one as arguments

        // for KEYS. The last one will be used to populate ARGV.

        return -1;

    }

    public function getScript()

    {

        return

<<<LUA

local cmd, insert = redis.call, table.insert

local increment, results = ARGV[1], { }

for idx, key in ipairs(KEYS) do

  if cmd('exists', key) == 1 then

    insert(results, idx, cmd('incrby', key, increment))

  else

    insert(results, idx, false)

  end

end

return results

LUA;

    }

}

$client = new Predis\Client($single_server);

$client->getProfile()->defineCommand('increxby', 'IncrementExistingKeysBy');

$client->mset('foo', 10, 'foobar', 100);

var_export($client->increxby('foo', 'foofoo', 'foobar', 50));

/*

array (

  0 => 60,

  1 => NULL,

  2 => 150,

)

*/