banker/src/Driver/AbstractDriver.php

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<?php declare(strict_types=1);
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/**
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* Banker
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*
* A Caching library implementing psr/cache (PSR 6) and psr/simple-cache (PSR 16)
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*
* PHP version 7.4
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*
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* @package Banker
* @author Timothy J. Warren <tim@timshomepage.net>
* @copyright 2016 - 2020 Timothy J. Warren
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @version 3.0.0
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* @link https://git.timshomepage.net/timw4mail/banker
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*/
namespace Aviat\Banker\Driver;
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use Aviat\Banker\LoggerTrait;
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use Psr\Log\LoggerAwareInterface;
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/**
* Base class for cache backends
*/
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abstract class AbstractDriver implements DriverInterface, LoggerAwareInterface {
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use LoggerTrait;
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/**
* Data to be stored later
*
* @var array
*/
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protected array $deferred = [];
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/**
* Common constructor interface for driver classes
*
* @param array $config - Connection parameters for the specified backend
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* @param array $options - Special connection options for the specified backend
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*/
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abstract public function __construct(array $config = [], array $options = []);
/**
* Retrieve a set of values by their cache key
*
* @param string[] $keys
* @return array
*/
public function getMultiple(array $keys = []): array
{
$output = [];
foreach ($keys as $key)
{
if ($this->exists($key))
{
$output[$key] = $this->get($key);
}
}
return $output;
}
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}