如何“通过”类属性到类方法？

发布于 2024-09-10 09:52:20 字数 257 浏览 2 评论 0原文

如何以以下方式“传递” eventName 到 dbSafe() ？这可能吗？ dbSafe() 会是什么样子？

$eventClass->eventName->dbSafe();

我猜 dbSafe() 大致如下所示：

public function dbSafe() {
     return mysql_real_escape_string($this);
}

原文

How can I "pass" eventName to dbSafe() in the following fashion? Is this possible? What would dbSafe() look like?

$eventClass->eventName->dbSafe();

I'm guessing dbSafe() would look roughly like this:

public function dbSafe() {
     return mysql_real_escape_string($this);
}

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冷默言语 2024-09-17 09:52:20

您可以将每个属性封装在一个公开 dbSafe() 的新类中。这有点像过于简单的装饰器模式。

class Property {
    private $value;
    function dbSafe() {
        return addslashes($this->value); //substitute for your function
    }
    function __construct($v) { $this->value = $v; }
}

class Event {
    function __get($name) { 
        return new Property($name);
    }
}

$e = new Event;
echo $e->{"df'\\"}->dbSafe();

You could encapsulate every attribute in a new class that exposed dbSafe(). It's kind of like an oversimplified decorator pattern.

class Property {
    private $value;
    function dbSafe() {
        return addslashes($this->value); //substitute for your function
    }
    function __construct($v) { $this->value = $v; }
}

class Event {
    function __get($name) { 
        return new Property($name);
    }
}

$e = new Event;
echo $e->{"df'\\"}->dbSafe();

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绿光 2024-09-17 09:52:20

如果 $event 是一个类的实例，具有名为 eventName 的属性和名为 dbSafe 的方法，那么也许您想要这样做：

$safeName = $event->dbSafe ('eventName');

public function dbSafe ($propertyName){
  return mysql_real_escape_string($this->$propertyName);
}

但是，将数据转义合并到所有类中并不是一个好主意，就像您在这里所做的那样。您确实需要中央数据库管理代码来处理所有转义，这样您就不会忘记它。

If $event is an instance of a class with a property called eventName and a method called dbSafe, then maybe you want to do this:

$safeName = $event->dbSafe ('eventName');

public function dbSafe ($propertyName){
  return mysql_real_escape_string($this->$propertyName);
}

BUT, it's not a great idea to incorporate your data escaping into all of your classes, as you seem to be doing here. You really want central database management code that handles all escaping so you can't forget it.

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