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Daniele Alessandri
ca7bd8149f
With a negative number Predis will count from the end of the arguments list to calculate the actual number of keys that will be interpreted as elements for `KEYS` by the underlying `EVAL` command.
67 lines
1.6 KiB
PHP
67 lines
1.6 KiB
PHP
<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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require 'SharedConfigurations.php';
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// This example will not work with versions of Redis < 2.6.
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//
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// Additionally to the EVAL command defined in the current development profile, the new
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// Predis\Command\ScriptedCommand base class can be used to build an higher abstraction
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// for our "scripted" commands so that they will appear just like any other command on
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// the client-side. This is a quick example used to implement INCREX.
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use Predis\Command\ScriptedCommand;
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class IncrementExistingKeysBy extends ScriptedCommand
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{
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public function getKeysCount()
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{
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// Tell Predis to use all the arguments but the last one as arguments
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// for KEYS. The last one will be used to populate ARGV.
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return -1;
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}
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public function getScript()
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{
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return
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<<<LUA
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local cmd, insert = redis.call, table.insert
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local increment, results = ARGV[1], { }
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for idx, key in ipairs(KEYS) do
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if cmd('exists', key) == 1 then
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insert(results, idx, cmd('incrby', key, increment))
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else
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insert(results, idx, false)
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end
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end
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return results
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LUA;
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}
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}
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$client = new Predis\Client($single_server);
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$client->getProfile()->defineCommand('increxby', 'IncrementExistingKeysBy');
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$client->mset('foo', 10, 'foobar', 100);
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var_export($client->increxby('foo', 'foofoo', 'foobar', 50));
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/*
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array (
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0 => 60,
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1 => NULL,
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2 => 150,
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)
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*/
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