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<?php
namespace PhpOffice\PhpSpreadsheet\Collection\Memory;
use DateInterval;
use Psr\SimpleCache\CacheInterface;
/**
* This is the default implementation for in-memory cell collection.
*
* Alternatives implementation should leverage off-memory, non-volatile storage
* to reduce overall memory usage.
*/
class SimpleCache1 implements CacheInterface
{
/**
* @var array Cell Cache
*/
private $cache = [];
/**
* @return bool
*/
public function clear()
{
$this->cache = [];
return true;
}
/**
* @param string $key
*
* @return bool
*/
public function delete($key)
{
unset($this->cache[$key]);
return true;
}
/**
* @param iterable $keys
*
* @return bool
*/
public function deleteMultiple($keys)
{
foreach ($keys as $key) {
$this->delete($key);
}
return true;
}
/**
* @param string $key
* @param mixed $default
*
* @return mixed
*/
public function get($key, $default = null)
{
if ($this->has($key)) {
return $this->cache[$key];
}
return $default;
}
/**
* @param iterable $keys
* @param mixed $default
*
* @return iterable
*/
public function getMultiple($keys, $default = null)
{
$results = [];
foreach ($keys as $key) {
$results[$key] = $this->get($key, $default);
}
return $results;
}
/**
* @param string $key
*
* @return bool
*/
public function has($key)
{
return array_key_exists($key, $this->cache);
}
/**
* @param string $key
* @param mixed $value
* @param null|DateInterval|int $ttl
*
* @return bool
*/
public function set($key, $value, $ttl = null)
{
$this->cache[$key] = $value;
return true;
}
/**
* @param iterable $values
* @param null|DateInterval|int $ttl
*
* @return bool
*/
public function setMultiple($values, $ttl = null)
{
foreach ($values as $key => $value) {
$this->set($key, $value);
}
return true;
}
}
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