src/cache/php/CacheItemPool.php
<?php
/*******************************************************************************
Copyright 2016 Whole Foods Co-op
This file is part of CORE-POS.
IT CORE is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
IT CORE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
in the file license.txt along with IT CORE; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*********************************************************************************/
namespace COREPOS\common\cache\php;
use COREPOS\common\cache\file\CacheItemPool as FilePool;
use COREPOS\common\cache\file\CacheItem;
/**
A PSR-6 CacheItemPoolInterface implementation
It stores data as a .php file that can be opcode cached
*/
class CacheItemPool extends FilePool
{
protected $items = array();
protected $file = 'core.cache.php';
public function __construct($file='core.cache.php')
{
if (substr($file, -4) !== '.php') {
$file .= '.php';
}
$this->file = $this->getCacheFile($file);
$this->items = $this->loadFromFile($this->file);
}
protected function loadFromFile($file)
{
// mark path as in use
if (!file_exists($file)) {
file_put_contents($file, "<?php\n return array();\n");
}
$cache = include($file);
return $cache;
}
protected function saveToFile($file, $items)
{
$exp = var_export($items, true);
$ret = file_put_contents($file, "<?php\n return {$exp};\n", LOCK_EX);
if (function_exists('opcache_compile_file')) {
opcache_compile_file($file);
}
return $ret;
}
}