public function isExists()
    {
        clearstatcache(true,(string)$this->resource);
        return is_file((string)$this->resource);
    }
public function isExists()
    {
        clearstatcache(true,(string)$this->resource);
        return is_file((string)$this->resource);
    }
public function isExists ( ) { clearstatcache ( true , ( string ) $ this -> resource ) ; return is_file ( ( string ) $ this -> resource ) ; }
Returns true if the resource exists in the filesystem.

@return Boolean
Returns true if the resource exists in the filesystem .