PHP FileCache Class (File base)

A simple file based cache based from Erik Giberti's FileCache class. See here

Enhanced Features

• Data is serialized and JSON encoded
• Cache data is encrypted by mcrypt
• File Based Cache was explained here

Installation

Run the following command in your command line shell in your php project

$ composer require rothkj1022/php-cache-class

Done.

You may also edit composer.json manually then perform composer update:

"require": {
    "rothkj1022/php-cache-class": "^2.1.0"
}

Getting started

Example usage with composer

//load composer packages
require('vendor/autoload.php');

//create new instance of the class
use rothkj1022\FileCache;
$cache = new FileCache\FileCache("tmp/");

Example usage without composer

//require the class
require_once("lib/FileCache.php");

//create new instance of the class
use rothkj1022\FileCache;
$cache = new FileCache\FileCache("tmp/");

//...

Local file source example

$cache_key = "client_list";

//see if we can get an existing cache
if (!$clients_data = $cache->get($cache_key)) {
    //nope. Let's get the real one!
    $clients_data = json_decode(file_get_contents("clients.json"));

    //set the cache up!
    $expire = 3600; //1 hour
    $cache->set($cache_key, $clients_data, $expire);
}

var_dump($clients_data);

External http GET request example

$uri = 'https://raw.githubusercontent.com/bahamas10/css-color-names/master/css-color-names.json';
$remote_data = $cache->file_get_contents($uri);
var_dump($remote_data);

Reference

Code reference for you to get started!

Properties

• protected $root = '/tmp/'; - Value is pre-pended to the cache, should be the full path to the directory.
• protected $error = null; - For holding any error messages that may have been raised
• private $_encryption_key = 'Fil3C@ch33ncryptionK3y' - Main key used for encryption (you need to set this up inside the class)

Methods

Public Methods

• Cache::get($key) - Reads the data from the cache specified by the cache key
• Cache::set($key [, $data, $ttl]) - Saves data to the cache. Anything that evaluates to false, null, '', boolean false, 0 will not be saved. $ttl Specifies the expiry time
• Cache::delete($key) - Deletes the cache specified by the $key
• Cache::get_error() - Reads and clears the internal error
• Cache::have_error() - Can be used to inspect internal error

Private Methods

See code to see all private methods used like Cache::_encrypt($pure_string) etc.

Changelog

Version 2.1.3

• Fixed: Stopped echoing guzzle request errors to screen

Version 2.1.2

• Integrated guzzle for more efficient http get requests

Version 2.1.1

• Changed: Renamed class back to Erik Giberti's original name, FileCache

Version 2.1.0

• Added: Composer integration
• Added: changelog

Credits

2010 - Authored by Erik Giberti 2011-2014 - Rewritten by Jovanni Lo / @lodev09 2018 - Modified by Kevin Roth / @rothkj1022

License

Released under the MIT License. See LICENSE file.