PDO - FETCH_CLASS - 将结果作为参数传递给构造函数 [英] PDO - FETCH_CLASS - pass results to constructor as parameters

问题描述

有什么办法可以将 PDO 的结果作为构造函数的参数传递?假设我有以下课程:

Is there any way, to pass results of PDO as parameters of the constructor? Let's say, I have the following class:

class Test
{
    private $value1;
    private $value2;
    function __construct($val1, $val2)
    {
        $this->value1 = $val1; $this->value2 = $val2;
    }
}

然后，通过 PDO 驱动程序，我从数据库中选择一些数据，让我们说:

Then, via PDO driver I select some data from DB, let's say:

SELECT price, quantity FROM stock

$results = $query->fetchAll(PDO::FETCH_CLASS|PDO::FETCH_PROPS_LATE, "Test");

现在，PDO 将这些值直接传递给类字段，并绕过构造函数.

Right now, PDO passess these values directly to the class fields, and bypassing the constructor.

也许我遗漏了一些东西，但我想将查询的结果传递给构造函数.构造函数不能依赖于查询，我希望即使不使用 PDO 也能实例化这个类.

Maybe I am missing something, but I want to pass results from the query to the constructor. Constructor cannot be query-dependent, I want to be able to instantiate this class even without using PDO.

推荐答案

[我编辑了这个答案，因为我之前的答案不再准确.]

[I edited this answer as my previous answer is not accurate anymore.]

FETCH_CLASS 确实会获取私有属性.请参考这个答案.

FETCH_CLASS does fetch into private properties. Please refer to this answer.

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