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<?php

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/**

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* SimplePie

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* A PHP-Based RSS and Atom Feed Framework.

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* Takes the hard work out of managing a complete RSS/Atom solution.

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* Redistribution and use in source and binary forms, with or without modification, are

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* permitted provided that the following conditions are met:

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* * Redistributions of source code must retain the above copyright notice, this list of

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* conditions and the following disclaimer.

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* * Redistributions in binary form must reproduce the above copyright notice, this list

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* of conditions and the following disclaimer in the documentation and/or other materials

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* provided with the distribution.

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* * Neither the name of the SimplePie Team nor the names of its contributors may be used

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* to endorse or promote products derived from this software without specific prior

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* written permission.

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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS

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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS

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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

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* POSSIBILITY OF SUCH DAMAGE.

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* @package SimplePie

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* @author Ryan Parman

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* @author Sam Sneddon

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* @author Ryan McCue

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* @link http://simplepie.org/ SimplePie

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* @license http://www.opensource.org/licenses/bsd-license.php BSD License

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namespace SimplePie\Cache;

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use InvalidArgumentException;

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/**

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* Subset of PSR-16 Cache client for caching data arrays

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* Only get(), set() and delete() methods are used,

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* but not has(), getMultiple(), setMultiple() or deleteMultiple().

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* The methods names must be different, but should be compatible to the

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* methods of \Psr\SimpleCache\CacheInterface.

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* @package SimplePie

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* @subpackage Caching

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* @internal

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interface DataCache

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{

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/**

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* Fetches a value from the cache.

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* Equivalent to \Psr\SimpleCache\CacheInterface::get()

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* <code>

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* public function get(string $key, mixed $default = null): mixed;

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* </code>

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* @param string $key The unique key of this item in the cache.

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* @param mixed $default Default value to return if the key does not exist.

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* @return array|mixed The value of the item from the cache, or $default in case of cache miss.

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* @throws InvalidArgumentException

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* MUST be thrown if the $key string is not a legal value.

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public function get_data(string $key, $default = null);

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/**

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* Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.

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* Equivalent to \Psr\SimpleCache\CacheInterface::set()

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* <code>

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* public function set(string $key, mixed $value, null|int|\DateInterval $ttl = null): bool;

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* </code>

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* @param string $key The key of the item to store.

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* @param array $value The value of the item to store, must be serializable.

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* @param null|int $ttl Optional. The TTL value of this item. If no value is sent and

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* the driver supports TTL then the library may set a default value

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* for it or let the driver take care of that.

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* @return bool True on success and false on failure.

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* @throws InvalidArgumentException

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* MUST be thrown if the $key string is not a legal value.

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public function set_data(string $key, array $value, ?int $ttl = null): bool;

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/**

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* Delete an item from the cache by its unique key.

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* Equivalent to \Psr\SimpleCache\CacheInterface::delete()

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* <code>

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* public function delete(string $key): bool;

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* </code>

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* @param string $key The unique cache key of the item to delete.

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* @return bool True if the item was successfully removed. False if there was an error.

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* @throws InvalidArgumentException

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* MUST be thrown if the $key string is not a legal value.

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public function delete_data(string $key): bool;

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}

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