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1441 ariadna 1 
<?php
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namespace PhpOffice\PhpSpreadsheet\Collection\Memory;
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use Psr\SimpleCache\CacheInterface;
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/**
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 * This is the default implementation for in-memory cell collection.
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 *
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 * Alternative implementation should leverage off-memory, non-volatile storage
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 * to reduce overall memory usage.
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 *
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 * Either SimpleCache1 or SimpleCache3, but not both, may be used.
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 * For code coverage testing, it will always be SimpleCache3.
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 *
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 * @codeCoverageIgnore
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 */
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class SimpleCache1 implements CacheInterface
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{
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    /**
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     * @var array Cell Cache
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     */
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    private array $cache = [];
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    public function clear(): bool
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    {
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        $this->cache = [];
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        return true;
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    }
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    public function delete($key): bool
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    {
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        unset($this->cache[$key]);
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        return true;
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    }
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    public function deleteMultiple($keys): bool
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    {
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        foreach ($keys as $key) {
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            $this->delete($key);
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        }
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        return true;
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    }
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    public function get($key, $default = null): mixed
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    {
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        if ($this->has($key)) {
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            return $this->cache[$key];
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        }
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        return $default;
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    }
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    public function getMultiple($keys, $default = null): iterable
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    {
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        $results = [];
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        foreach ($keys as $key) {
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            $results[$key] = $this->get($key, $default);
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        }
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        return $results;
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    }
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    public function has($key): bool
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    {
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        return array_key_exists($key, $this->cache);
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    }
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    public function set($key, $value, $ttl = null): bool
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    {
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        $this->cache[$key] = $value;
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        return true;
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    }
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    public function setMultiple($values, $ttl = null): bool
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    {
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        foreach ($values as $key => $value) {
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            $this->set($key, $value);
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        }
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        return true;
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    }
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}