library/Odesk/Phystrix/RequestCache.php
public function exists($commandKey, $cacheKey)
    {
        return array_key_exists($commandKey, $this->cachedResults)
            && array_key_exists($cacheKey, $this->cachedResults[$commandKey]);
    }
public function exists($commandKey, $cacheKey)
    {
        return array_key_exists($commandKey, $this->cachedResults)
            && array_key_exists($cacheKey, $this->cachedResults[$commandKey]);
    }
public function exists ( $ commandKey , $ cacheKey ) { return array_key_exists ( $ commandKey , $ this -> cachedResults ) && array_key_exists ( $ cacheKey , $ this -> cachedResults [ $ commandKey ] ) ; }
Returns true, if specified cache key exists

@param string $commandKey
@param string $cacheKey
@return bool
Returns true if specified cache key exists