Redis cache class in get method return false for keys with value of empty string

[sr-hosseyni]

Questions should go to https://forum.phalconphp.com
Documentation issues should go to https://github.com/phalcon/docs/issues

Expected and Actual Behavior

Describe what you are trying to achieve and what goes wrong.

Provide output if related. Provide coredump if any. Use https://github.com/phalcon/cphalcon/wiki/Generating-a-backtrace as reference

// paste output here

Provide minimal script to reproduce the issue

use \Phalcon\Cache\Backend\Redis;
$r = new Redis();
$r->get('shir'); // shir actually exists in redis with EMPTY string, but this return false

Details

• Phalcon version: (php --ri phalcon)
  Web framework delivered as a C-extension for PHP
  phalcon => enabled
  Author => Phalcon Team and contributors
  Version => 2.0.13
  Build Date => May 20 2016 22:13:46
  Powered by Zephir => Version 0.9.2a-dev

Directive => Local Value => Master Value
phalcon.db.escape_identifiers => On => On
phalcon.db.force_casting => Off => Off
phalcon.orm.events => On => On
phalcon.orm.virtual_foreign_keys => On => On
phalcon.orm.column_renaming => On => On
phalcon.orm.not_null_validations => On => On
phalcon.orm.exception_on_failed_save => Off => Off
phalcon.orm.enable_literals => On => On
phalcon.orm.late_state_binding => Off => Off
phalcon.orm.enable_implicit_joins => On => On
phalcon.orm.cast_on_hydrate => Off => Off
phalcon.orm.ignore_unknown_columns => Off => Off

• PHP Version: (php -v)
  PHP 5.5.9-1ubuntu4.17 (cli) (built: May 19 2016 19:05:57)
  Copyright (c) 1997-2014 The PHP Group
  Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
  with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies
  with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans

• Operating System: Ubuntu/14.04

• Installation type: installing via package manager

• Zephir version (if any):-

• Server: Nginx

• Other related info (Database, table schema):

[sergeyklay]

Fixed in the 3.0.x branch.