phpfile.md

PhpFile

Save the cache as PHP script to on the filesystem using var_export when storing cache and include when loading cache.

The implementation leverages the PHP engine’s in-memory file caching (opcache) to cache application data in addition to code. This method is particularly fast in PHP7.2+ due to opcode cache optimizations.

PHP file caching should primarily be used for arrays and objects. There is no performance benefit over APCu for storing strings.

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use Desarrolla2\Cache\PhpFile as PhpFileCache;

$cache = new FileCache();

Options

name	type	default
ttl	int	null	Maximum time to live in seconds
prefix	string	""	Key prefix
filename	string or callable	"%s.php"	Filename as sprintf format

Filename option

The filename will be parsed using sprintf where '%s' is substituted with the key.

Instead of a string, filename may also be set to a callable, like a callable object or closure. In that case the callable will be called to create a filename as

$filename = $callable($key);

BasicFilename

The library comes with invokable object as callable for the filename. The BasicFilename object works as described above.

TrieFilename

The TrieFilename object will create a prefix tree directory structure. This is useful where a lot of cache files would cause to many files in a directory.

Specify the sprintf format and the directory level to the constructor when creating a TrieFilename object.

use Desarrolla2\Cache\File as FileCache;
use Desarrolla2\Cache\File\TrieFilename;

$callback = new TrieFilename('%s.php', 2);

$cache = (new FileCache(sys_get_temp_dir() . '/cache'))
    ->withOption('filename', $callback);

In this case, adding an item with key foobar would be create a file at

/tmp/cache/f/fo/foobar.php

Packer

By default the NopPacker is used. Other packers should not be used.