src/Formatter.php
private function isOpType($type, $key)
    {
        if (!isset($this->ops[$type])) {
            return false;
        }
        return in_array($key, $this->ops[$type]);
    }
private function isOpType($type, $key)
    {
        if (!isset($this->ops[$type])) {
            return false;
        }
        return in_array($key, $this->ops[$type]);
    }
private function isOpType ( $ type , $ key ) { if ( ! isset ( $ this -> ops [ $ type ] ) ) { return false ; } return in_array ( $ key , $ this -> ops [ $ type ] ) ; }
Determines if a key is of a certain operator handling type.

@param   string  $type
@param   string  $key
@return  bool
Determines if a key is of a certain operator handling type .