PHPCfg\Parser::writeVariable PHP Method

    private function writeVariable(Operand $var)
    {
        while ($var instanceof Operand\Temporary && $var->original) {
            $var = $var->original;
        }
        if ($var instanceof Operand\Variable) {
            if ($var->name instanceof Literal) {
                $name = $this->getVariableName($var);
                $var = new Operand\Temporary($var);
                $this->writeVariableName($name, $var, $this->block);
            } else {
                $this->readVariable($var->name);
                // variable variable write - do not resolve the write for now, but we can register the read
            }
        }
        return $var;
    }