private function fetchParameterExpansion($variable_name)
    {
        $parameter_type = $this->fetchParameterExpansionType($variable_name);

        list($parameter_symbol, $empty_flag) = $this->fetchParameterExpansionSymbol($variable_name, $parameter_type);
        list($variable, $default) = $this->splitVariableDefault($variable_name, $parameter_symbol);

        $value = $this->getVariable($variable);

        return $this->parseVariableParameter(
            $variable,
            $default,
            $this->hasVariable($variable),
            $empty_flag && empty($value),
            $parameter_type
        );
    }
private function fetchParameterExpansion($variable_name)
    {
        $parameter_type = $this->fetchParameterExpansionType($variable_name);

        list($parameter_symbol, $empty_flag) = $this->fetchParameterExpansionSymbol($variable_name, $parameter_type);
        list($variable, $default) = $this->splitVariableDefault($variable_name, $parameter_symbol);

        $value = $this->getVariable($variable);

        return $this->parseVariableParameter(
            $variable,
            $default,
            $this->hasVariable($variable),
            $empty_flag && empty($value),
            $parameter_type
        );
    }
private function fetchParameterExpansion ( $ variable_name ) { $ parameter_type = $ this -> fetchParameterExpansionType ( $ variable_name ) ; list ( $ parameter_symbol , $ empty_flag ) = $ this -> fetchParameterExpansionSymbol ( $ variable_name , $ parameter_type ) ; list ( $ variable , $ default ) = $ this -> splitVariableDefault ( $ variable_name , $ parameter_symbol ) ; $ value = $ this -> getVariable ( $ variable ) ; return $ this -> parseVariableParameter ( $ variable , $ default , $ this -> hasVariable ( $ variable ) , $ empty_flag && empty ( $ value ) , $ parameter_type ) ; }
Fetches and sets the parameter expansion

@param string $variable_name The parameter expansion inside this to fetch

@return string The parsed value
Fetches and sets the parameter expansion