protected function _getAllIndices()
    {
        $out = array();

        foreach ($this->_thread as $val) {
            $out += $val;
        }

        return array_keys($out);
    }
protected function _getAllIndices()
    {
        $out = array();

        foreach ($this->_thread as $val) {
            $out += $val;
        }

        return array_keys($out);
    }
protected function _getAllIndices ( ) { $ out = array ( ) ; foreach ( $ this -> _thread as $ val ) { $ out += $ val ; } return array_keys ( $ out ) ; }
Return all indices.

@return array  An array of indices.
Return all indices .