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<?php
/*
* This file is part of the Predis package.
*
* (c) 2009-2020 Daniele Alessandri
* (c) 2021-2025 Till Krüss
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
use Predis\Client;
require __DIR__ . '/../shared.php';
// Example of FCALL_RO command usage:
// 1. Set key-value pair
$client = new Client($single_server);
$client->set('foo', 'bar');
echo "Set key 'foo' with value 'bar'\n";
// 2. Load redis function with 'no-writes' flag
$client->function->load(
"#!lua name=mylib
redis.register_function{
function_name='myfunc',
callback=function(keys, args) return redis.call('GET', keys[1]) end,
flags={'no-writes'}
}"
);
echo 'Loaded custom function that perform GET command against provided key.' . "\n";
// 3. Call function above with given key
$response = $client->fcall_ro('myfunc', ['foo']);
echo "Function returned value against provided key 'foo' is '{$response}'";
// 4. Delete test library
$client->function->delete('mylib');
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