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<?php
namespace Maatwebsite\Excel\Cache;
use Psr\SimpleCache\CacheInterface;
class MemoryCache implements CacheInterface
{
/**
* @var int|null
*/
protected $memoryLimit;
/**
* @var array
*/
protected $cache = [];
/**
* @param int|null $memoryLimit
*/
public function __construct(int $memoryLimit = null)
{
$this->memoryLimit = $memoryLimit;
}
/**
* {@inheritdoc}
*/
public function clear(): bool
{
$this->cache = [];
return true;
}
/**
* {@inheritdoc}
*/
public function delete(string $key): bool
{
unset($this->cache[$key]);
return true;
}
/**
* {@inheritdoc}
*/
public function deleteMultiple($keys): bool
{
foreach ($keys as $key) {
$this->delete($key);
}
return true;
}
/**
* {@inheritdoc}
*/
public function get(string $key, mixed $default = null): mixed
{
if ($this->has($key)) {
return $this->cache[$key];
}
return $default;
}
/**
* {@inheritdoc}
*/
public function getMultiple(iterable $keys, mixed $default = null): iterable
{
$results = [];
foreach ($keys as $key) {
$results[$key] = $this->get($key, $default);
}
return $results;
}
/**
* {@inheritdoc}
*/
public function has($key): bool
{
return isset($this->cache[$key]);
}
/**
* {@inheritdoc}
*/
public function set(string $key, mixed $value, null|int|\DateInterval $ttl = null): bool
{
$this->cache[$key] = $value;
return true;
}
/**
* {@inheritdoc}
*/
public function setMultiple($values, $ttl = null): bool
{
foreach ($values as $key => $value) {
$this->set($key, $value);
}
return true;
}
/**
* @return bool
*/
public function reachedMemoryLimit(): bool
{
// When no limit is given, we'll never reach any limit.
if (null === $this->memoryLimit) {
return false;
}
return count($this->cache) >= $this->memoryLimit;
}
/**
* @return array
*/
public function flush(): array
{
$memory = $this->cache;
$this->clear();
return $memory;
}
}
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