有人有一個很好的做法來在插入數據庫之前處理數據驗證，而無需將所有內容都包裝到 try/catch 中嗎？try{    (new DB_table)->put();}catch(User_error $e){    echo "Error: Something could not be validated!";}class DB_table extends DB {    public $name = 'john doe';    public $address = 'tall cedar road 123';    public $email = '[email protected]';    public function put(){        $this->validate_name('name');        $this->validate_address('address');        $this->validate_email('email');        if($this->errors){            throw new User_error();        }        // insert data into database    }}class DB {    protected $errors = [];    protected function validate_name(string $key){        try{            $this->$key = trim($this->$key);            // some validation            throw new Input_error('Name could not be validated');        }        catch(Input_error $e){            $this->errors[$key] = $e->getMessage();        }    }    protected function validate_address(string $key){        try{            $this->$key = trim($this->$key);            // some validation            throw new Input_error('Address could not be validated');        }        catch(Input_error $e){            $this->errors[$key] = $e->getMessage();        }    }    protected function validate_email(string $key){        try{            $this->$key = trim($this->$key);            // some validation            throw new Input_error('E-mail could not be validated');        }        catch(Input_error $e){            $this->errors[$key] = $e->getMessage();        }    }}class Input_error extends Error {}class User_error extends Error {}