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Editing: File.php

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<?php

// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
// SPDX-License-Identifier: BSD-3-Clause

declare(strict_types=1);

namespace SimplePie\Cache;

/**
 * Caches data to the filesystem
 *
 * @deprecated since SimplePie 1.8.0, use implementation of "Psr\SimpleCache\CacheInterface" instead
 */
class File implements Base
{
    /**
     * Location string
     *
     * @see SimplePie::$cache_location
     * @var string
     */
    protected $location;

/**
     * Filename
     *
     * @var string
     */
    protected $filename;

/**
     * File extension
     *
     * @var string
     */
    protected $extension;

/**
     * File path
     *
     * @var string
     */
    protected $name;

/**
     * Create a new cache object
     *
     * @param string $location Location string (from SimplePie::$cache_location)
     * @param string $name Unique ID for the cache
     * @param Base::TYPE_FEED|Base::TYPE_IMAGE $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
     */
    public function __construct(string $location, string $name, $type)
    {
        $this->location = $location;
        $this->filename = $name;
        $this->extension = $type;
        $this->name = "$this->location/$this->filename.$this->extension";
    }

/**
     * Save data to the cache
     *
     * @param array<mixed>|\SimplePie\SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
     * @return bool Successfulness
     */
    public function save($data)
    {
        if (file_exists($this->name) && is_writable($this->name) || file_exists($this->location) && is_writable($this->location)) {
            if ($data instanceof \SimplePie\SimplePie) {
                $data = $data->data;
            }

$data = serialize($data);
            return (bool) file_put_contents($this->name, $data);
        }
        return false;
    }

/**
     * Retrieve the data saved to the cache
     *
     * @return array<mixed>|false Data for SimplePie::$data
     */
    public function load()
    {
        if (file_exists($this->name) && is_readable($this->name)) {
            return unserialize((string) file_get_contents($this->name));
        }
        return false;
    }

/**
     * Retrieve the last modified time for the cache
     *
     * @return int|false Timestamp
     */
    public function mtime()
    {
        return @filemtime($this->name);
    }

/**
     * Set the last modified time to the current time
     *
     * @return bool Success status
     */
    public function touch()
    {
        return @touch($this->name);
    }

/**
     * Remove the cache
     *
     * @return bool Success status
     */
    public function unlink()
    {
        if (file_exists($this->name)) {
            return unlink($this->name);
        }
        return false;
    }
}

class_alias('SimplePie\Cache\File', 'SimplePie_Cache_File');

Editing: File.php

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