Clears all values from the cache.

@return mixed
770449
public function drop()
    {
        $this->curl->drop($this->base);
        $this->curl->createCacheIndex($this->base, $this->createCache);
        $this->dropChain();
    }
626230
public function clear()
    {
        $cachePath   = $this->options['path'];
        $cachePrefix = $this->options['prefix'] ? $this->options['prefix'].DIRECTORY_SEPARATOR : '';
        $files       = (array) glob($cachePath.$cachePrefix.'*');

        foreach ($files as $file) {
            if (is_dir($file)) {
                $matches = glob($file.'/*.php');
                if (is_array($matches)) {
                    array_map('unlink', $matches);
                }
                rmdir($file);
            } else {
                $this->unlink($file);
            }
        }

        return true;
    }
5272
public function clean()
    {
        $cleanCallback = function ($allCleaned, $cache) {
            return $allCleaned && $cache->clean();
        };
        return array_reduce($this->caches, $cleanCallback, true);
    }
65025
public function clearCache() {
        $files = glob($this->getConfig('cacheDir') . '/*', GLOB_MARK);
        foreach ($files as $file) {
            unlink($file);
        }
    }
196340
public function clear()
	{
		// Path to cache folder
		$cacheDir = PATH_APP . DS . 'cache' . DS . '*';

		// Remove recursively
		foreach (glob($cacheDir) as $cacheFileOrDir)
		{
			$readable = str_replace(PATH_APP . DS, '', $cacheFileOrDir);
			if (is_dir($cacheFileOrDir))
			{
				if (!Filesystem::deleteDirectory($cacheFileOrDir))
				{
					$this->output->addLine('Unable to delete cache directory: ' . $readable, 'error');
				}
				else
				{
					$this->output->addLine($readable . ' deleted', 'success');
				}
			}
			else
			{
				// Don't delete index.html
				if ($cacheFileOrDir != PATH_APP . DS . 'cache' . DS . 'index.html')
				{
					if (!Filesystem::delete($cacheFileOrDir))
					{
						$this->output->addLine('Unable to delete cache file: ' . $readable, 'error');
					}
					else
					{
						$this->output->addLine($readable . ' deleted', 'success');
					}
				}
			}
		}

		$this->output->addLine('Clear cache complete', 'success');
	}
1012316
public function clean()
    {
        try {
            $result = [
                'result'        => isset($this->cacheInstance) && is_object($this->cacheInstance) ? $this->cacheInstance->clear() : FALSE,
                'commit'        => isset($this->cacheInstance) && is_object($this->cacheInstance) ? $this->cacheInstance->commit() : NULL,
                'getDriverName' => isset($this->cacheInstance) && is_object($this->cacheInstance) ? $this->cacheInstance->getDriverName() : NULL,
                'getStats'      => isset($this->cacheInstance) && is_object($this->cacheInstance) ? $this->cacheInstance->getStats() : NULL,
                'getConfig'     => isset($this->cacheInstance) && is_object($this->cacheInstance) ? $this->cacheInstance->getConfig() : NULL,
            ];
            $this->debug->debug(__FUNCTION__, 'Clear Cache from Handler: ' . json_encode($this->cacheHandle) . ' -> Result: ' . json_encode($result));

            return $result;
        }
        catch (\Exception $e) {
            $message = 'Error File: ' . $e->getFile() . ' - Line: ' . $e->getLine() . ' - Code: ' . $e->getCode() . ' - Message: ' . $e->getMessage();
            $this->debug->error(__FUNCTION__, $message);

            return $message;
        }
    }
423919
public function clear()
    {
        foreach ($this->jobs as $name => $job) {
            $key = $this->makeCacheKey($name);
            $this->cache->forget($key);
        }

        $this->jobs = array();
    }
1193822
public function clear()
    {
        $params = [
            'index' => $this->_esindex,
            'type' => $this->_estype,
            'body' => [
                'query' => [
                    'match_all' => []
                ]
            ]
        ];
        $query = $this->_es->deleteByQuery($params); 
        // return $query['_indices']['tweets']['_shards']['successful'];
        $result = true;
        return $result;
    }
1041928
public function clear()
    {
        $patternKey = $this->fixKey('*');
        $list = glob($patternKey);
        foreach ($list as $file) {
            unlink($file);
        }
        return true;
    }
954427
public function clear()
    {
        $session = $this->getSessionContainer();
        if (!$session->isSwitchedUser) {
            return false;
        }

        $oldSession = unserialize($session->session);
        $ref        = $session->ref;
        $_SESSION = $oldSession;

        return $ref ? $ref : true;
    }
679666
public function clearAll()
    {
        $prefixes = Cache::configured();
        foreach ($prefixes as $prefix) {
            $this->clear($prefix);
        }
    }
130296
public function Reset() {
      // Check the _NoReset flag.
      switch($this->_NoReset) {
         case 1:
            $this->_NoReset = 0;
            return;
         case 2:
            return;
      }
      $this->_Selects         = array();
      $this->_Froms           = array();
      $this->_Joins           = array();
      $this->_Wheres          = array();
      $this->_WhereConcat     = 'and';
      $this->_WhereConcatDefault = 'and';
      $this->_WhereGroupCount = 0;
      $this->_OpenWhereGroupCount = 0;
      $this->_GroupBys        = array();
      $this->_Havings         = array();
      $this->_OrderBys        = array();
      $this->_AliasMap        = array();
      
      $this->_CacheKey        = NULL;
      $this->_CacheOperation  = NULL;
      $this->_CacheOptions    = NULL;
      $this->_Distinct        = FALSE;
      $this->_Limit           = FALSE;
      $this->_Offset          = FALSE;
      $this->_Order           = FALSE;
      
      $this->_Sets            = array();
      $this->_NamedParameters = array();
      $this->_Options         = array();
      
      return $this;
   }
733687
public function clear(): bool
    {
        //TODO: check the need to call
        clearstatcache();
        
        $dh = @opendir($this->cacheDir);
        if (false === $dh) {
            return false;
        }
        
        while (false !== ($entry = readdir($dh))) {
            $file = $this->cacheDir . '/' . $entry;
            if (is_file($file) && 0 !== strpos($entry, '.')) { //exclude .htaccess
                unlink($file);
            }
        }
        
        closedir($dh);
        
        return true;
    }
550544
public function clearCache()
    {
        $this->_data = null;
        if ($this->frontCache instanceof Cache) {
            $this->frontCache->delete($this->cacheKey);
        }
        if ($this->cache instanceof Cache) {
            return $this->cache->delete($this->cacheKey);
        }
        return true;
    }
370232
public function clear()
    {
        echo $path  = $this->getFilePath();
        $files = glob($path . '*' . $this->fileExtension);

        foreach ($files as $file)
        {
            // if cache file expire, delete cache file
            if ( time() > filemtime($file) )
            {
                @unlink($file);
            }
        }
    }
287357
public function removeAll()
    {
        $this->instance->unlock();
        $result = $this->instance->removeAll();
        $this->instance->lock();
        return $result;
    }
1133355
public function clearCache()
    {
        $objects = scandir($this->getCachePath());
        $dir = $this->getCachePath();
        foreach ($objects as $object) {
            if ($object != "." && $object != "..") {
                if (is_dir($dir.$object)) {
                    self::rrmdir($dir.$object);
                } elseif ($object !== 'cache_config') {
                    unlink($dir.$object);
                }
            }
        }

        return $this;
    }