Completed
Push — V6 ( 198742...8f6ce3 )
by Georges
02:35
created

Driver::getHelp()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 8
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 8
rs 9.4285
c 0
b 0
f 0
cc 1
eloc 4
nc 1
nop 0
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<?php
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/**
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 *
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 * This file is part of phpFastCache.
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 *
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 * @license MIT License (MIT)
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 *
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 * For full copyright and license information, please see the docs/CREDITS.txt file.
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 *
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 * @author Lucas Brucksch <[email protected]>
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 *
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 */
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namespace phpFastCache\Drivers\Zendshm;
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use phpFastCache\Core\Pool\DriverBaseTrait;
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use phpFastCache\Core\Pool\ExtendedCacheItemPoolInterface;
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use phpFastCache\Entities\driverStatistic;
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use phpFastCache\Exceptions\phpFastCacheDriverCheckException;
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use phpFastCache\Exceptions\phpFastCacheDriverException;
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use phpFastCache\Exceptions\phpFastCacheInvalidArgumentException;
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use Psr\Cache\CacheItemInterface;
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/**
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 * Class Driver (zend memory cache)
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 * Requires Zend Data Cache Functions from ZendServer
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 * @package phpFastCache\Drivers
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 */
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class Driver implements ExtendedCacheItemPoolInterface
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{
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    use DriverBaseTrait;
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    /**
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     * Driver constructor.
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     * @param array $config
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     * @throws phpFastCacheDriverException
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     */
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    public function __construct(array $config = [])
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    {
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        $this->setup($config);
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        if (!$this->driverCheck()) {
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            throw new phpFastCacheDriverCheckException(sprintf(self::DRIVER_CHECK_FAILURE, $this->getDriverName()));
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        }
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    }
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    /**
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     * @return bool
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     */
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    public function driverCheck()
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    {
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        if (extension_loaded('Zend Data Cache') && function_exists('zend_shm_cache_store')) {
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            return true;
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        } else {
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            return false;
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        }
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    }
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    /**
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     * @param \Psr\Cache\CacheItemInterface $item
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     * @return mixed
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     * @throws phpFastCacheInvalidArgumentException
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     */
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    protected function driverWrite(CacheItemInterface $item)
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    {
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        /**
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         * Check for Cross-Driver type confusion
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         */
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        if ($item instanceof Item) {
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            $ttl = $item->getExpirationDate()->getTimestamp() - time();
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            return zend_shm_cache_store($item->getKey(), $this->driverPreWrap($item), ($ttl > 0 ? $ttl : 0));
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        } else {
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            throw new phpFastCacheInvalidArgumentException('Cross-Driver type confusion detected');
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        }
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    }
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    /**
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     * @param \Psr\Cache\CacheItemInterface $item
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     * @return mixed
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     */
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    protected function driverRead(CacheItemInterface $item)
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    {
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        $data = zend_shm_cache_fetch($item->getKey());
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        if ($data === false) {
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            return null;
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        }
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        return $data;
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    }
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    /**
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     * @param \Psr\Cache\CacheItemInterface $item
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     * @return bool
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     * @throws phpFastCacheInvalidArgumentException
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     */
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    protected function driverDelete(CacheItemInterface $item)
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    {
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        /**
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         * Check for Cross-Driver type confusion
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         */
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        if ($item instanceof Item) {
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            return zend_shm_cache_delete($item->getKey());
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        } else {
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            throw new phpFastCacheInvalidArgumentException('Cross-Driver type confusion detected');
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        }
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    }
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    /**
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     * @return bool
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     */
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    protected function driverClear()
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    {
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        return @zend_shm_cache_clear();
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    }
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    /**
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     * @return bool
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     */
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    protected function driverConnect()
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    {
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        return true;
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    }
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    /********************
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     *
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     * PSR-6 Extended Methods
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     *
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     *******************/
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    /**
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     * @return string
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     */
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    public static function getHelp()
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    {
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        return <<<HELP
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<p>
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This driver rely on Zend Server 8.5+, see: http://www.zend.com/en/products/zend_server
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</p>
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HELP;
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    }
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    /**
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     * @return driverStatistic
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     */
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    public function getStats()
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    {
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        $stats = (array) zend_shm_cache_info();
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        return (new driverStatistic())
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            ->setData(implode(', ', array_keys($this->namespaces)))
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Bug introduced by
The property namespaces does not exist. Did you maybe forget to declare it?

In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:

class MyClass { }

$x = new MyClass();
$x->foo = true;

Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion:

class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;
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            ->setInfo(sprintf("The Zend memory have %d item(s) in cache.\n For more information see RawData.",$stats[ 'items_total' ]))
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            ->setRawData($stats)
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            ->setSize($stats[ 'memory_total' ]);
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    }
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}