imagecms/ImageCMS

<?php

if (!defined('BASEPATH')) {
    exit('No direct script access allowed');
}

/**
 * Image CMS
 * Memcache Class
 *
 */
class Mem_cache extends Memcache
{

    public $CI;

    public $get = 0;

    public $set = 0;

    public $key_prefix = '';

    //Cache config
    public $_Config = [
                       'store' => 'cache',
                       'ttl'   => 3600,
                      ];

    public function __construct() {

        $this->CI = & get_instance();
        $this->connect('localhost', 11211) or die('Could not connect to memcache server.');
        $this->key_prefix = base_url();
    }

    /**
     * Fetch Cache
     *
     * @param string $key
     *
     * @return mixed
     */
    public function fetch($key, $group = FALSE) {

        if (($ret = $this->_fetch($key)) === false) {
            return false;
        } else {
            return $ret;
        }
    }

    public function _fetch($key) {

        $key = $this->generatekey($key);

        $this->get++;

        return $this->get($key);
    }

    /**
     * Fetch cached function
     */
    public function fetch_func($object, $func, $args = []) {

        $key = $this->generatekey(get_class($object) . '::' . $func . '::' . serialize($args));

        $this->get++;

        return $this->get($key);
    }

    /**
     * Store Cache Item
     *
     * @param string  $key
     * @param mixed   $data
     * @param int     $ttl
     *
     * @return bool
     */
    public function store($key, $data, $ttl = false, $group = false) {

        if (!$ttl) {
            $ttl = $this->_Config['ttl'];
        }

        $this->set($this->generatekey($key), $data, FALSE, $ttl);

        $this->set++;
        return TRUE;
    }

    /**
     * Cache Function
     *
     * @return mixed
     * @access public
     */
    public function call($func = [], $args = [], $ttl = FALSE) {

        if ($ttl === FALSE) {
            $ttl = $this->_Config['ttl'];
        }

        $arguments = func_get_args();

        //class_name::metohd
        $key = get_class($arguments[0][0]) . '::' . $arguments[0][1] . '::' . serialize($args);

        if (($cache = $this->fetch($key)) !== false) {
            return $cache;
        } else {
            $target = array_shift($arguments);
            $result = call_user_func_array($target, $args);

            if (!$this->store($key, $result, false)) {
                return FALSE;
            }

            return $result;
        }
    }

    /**
     * Clean all cache objects
     *
     * @return void
     */
    public function Clean() {

        $this->flush();
    }

    /**
     * Clean all cache objects
     *
     * @return void
     */
    public function delete_group() {

        $this->flush();
    }

    /**
     * Delete Cache Item
     *
     * @param string $key - cache item key
     *
     * @return bool
     */
    public function delete($key) {

        $this->delete($this->generatekey($key));
    }

    /**
     * Delete Cached Function
     *
     * @return bool
     */
    public function delete_func($object, $func, $args = []) {

        $file = $this->generatekey(get_class($object) . '::' . $func . '::' . serialize($args));
        $this->delete($file);
    }

    /**
     * Delete All Cache Items
     *
     * @return bool
     * @access public
     */
    public function delete_all() {

        $this->flush();
    }

    /**
     * Generate key
     *
     * @param  $key
     * @return string */
    public function generatekey($key) {

        return md5($this->key_prefix . $key);
    }

}

/* End of cache.php */