Where is the thinkphp5 array write file cache?

ThinkPHP5 is a PHP framework based on the MVC pattern. It uses a special function to write an array into the file cache when processing the file cache. So, where are these file caches stored?

In ThinkPHP5, a class called File cache driver is used to handle file caching. This class is implemented by writing cached data to a file. These cache files are stored in the cache directory under the application's runtime directory. This directory is called the runtime cache directory and is used to store all cache files. The location of this directory can be configured in the application's configuration file, as shown below:

// 应用配置
return [
    // 缓存设置
    'cache'         => [
        // 驱动方式
        'type'   => 'File',
        // 缓存保存目录
        'path'   => APP_PATH . 'runtime/cache/',
        // 缓存前缀
        'prefix' => '',
        // 缓存有效期 0表示永久缓存
        'expire' => 0,
    ],
];

In the configuration file, we can see that the type in the cache settings is configured as File, which means that we are using File cache driver. In addition, through the path configuration item, we can specify the directory location where cache files are stored.

When we use an array to write to the file cache, ThinkPHP5 will automatically convert the array into a string and store it in a file with the key name of the file name. The following is a sample code:

// 将数组写入文件缓存
Cache::set('name', ['foo' => 'bar']);

// 从文件缓存中读取数组
$name = Cache::get('name');

In the above code, we use the set method of the Cache class to write an array to the file cache. We then read the array from the file cache using the get method. During this process, the framework will automatically convert the array into a string and store it in the corresponding cache file.

In summary, ThinkPHP5's array writing file cache function is implemented by converting the cache data into a string and storing it in a file with the key name of the file name in the runtime cache directory. of. Developers can customize the location where cache files are stored by modifying the path configuration item in the configuration file.

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