这是一个谜题：当存在与 $obj->$key 匹配的 setter 时，__set($value, $name) 不会被调用，但在不存在时会被调用
上下文如下：
$values = $form->getValues();
foreach($values as $key=>$value) {
$obj->{$key} = $value;
}
如果 $key 是有效键，则不会调用 __set($name, $value)。如果 $key 不是有效密钥，则它是有效密钥。我的集合如下所示：
public function __set($name, $value) {
$method = 'set' . ucfirst($name);
if(method_exists($method)) {
$this->$method($value);
} else {
throw new RuntimeException('Attempt to access a non-existant property with method ' . $method);
}
}
在 __set($name, $value) 方法所属的对象中，所有属性都是私有的并带有下划线。因此，对于键“name”，会有以下内容：
private $_name;
public function setName($name) {
$this->_name = $name;
return $this;
}
我知道它没有被调用，因为我尝试在 $method = 'set' 之后插入异常。 ucfirst($name);.当 $name 没有引用有效的 setter 时会发生该异常，但当它没有引用时则不会发生该异常。每次都应该被击中。有人知道这里发生了什么吗？
Here's the context:
$values = $form->getValues();
foreach($values as $key=>$value) {
$obj->{$key} = $value;
}
If $key is a valid key, __set($name, $value) is not called. If $key is not a valid key, it is. Here's what my set looks like:
public function __set($name, $value) {
$method = 'set' . ucfirst($name);
if(method_exists($method)) {
$this->$method($value);
} else {
throw new RuntimeException('Attempt to access a non-existant property with method ' . $method);
}
}
In the object to which the __set($name, $value) method belongs, all properties are private and underscored. So for key 'name' there would be the following:
private $_name;
public function setName($name) {
$this->_name = $name;
return $this;
}
I know that it isn't called because I tried inserting an exception just after the $method = 'set' . ucfirst($name);. That exception was hit when $name did not reference a valid setter, but was not hit when it didn't. It should have been hit every time. Anyone have any clue what's happening here?
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这是设计使然。来自手册
如果您有与
$key匹配的public属性，则会设置它们，因为它们可访问。另外，您使用
method_exists()是不正确的。应该是This is by design. From the manual
If you have
publicproperties matching$key, they will be set because they are accessible.Also, your use of
method_exists()is incorrect. It should be这是有记录的行为；这就是 __set() 的实际工作原理： 文档在这里。
That's documented behavior; it's how __set() actually works: documentation here.