private function hasVariable($variable)
    {
        if (array_key_exists($variable, $this->parser->lines)) {
            return true;
        }

        if (array_key_exists($variable, $this->context)) {
            return true;
        }

        return false;
    }
private function hasVariable($variable)
    {
        if (array_key_exists($variable, $this->parser->lines)) {
            return true;
        }

        if (array_key_exists($variable, $this->context)) {
            return true;
        }

        return false;
    }
private function hasVariable ( $ variable ) { if ( array_key_exists ( $ variable , $ this -> parser -> lines ) ) { return true ; } if ( array_key_exists ( $ variable , $ this -> context ) ) { return true ; } return false ; }
Checks to see if a variable exists

@param string $variable The variable name to get

@return bool
Checks to see if a variable exists