如何使用 PHP 5.3 序列化 SplFileObject？
我正在尝试序列化一个 SplFileObject，它在 5.2 中默默失败，并在 5.3 中引发致命错误。到目前为止，我已经通过子类化 SplFileObject 并使用（简化的）以下代码实现 Serialized 接口解决了 5.2 中的问题（完整版本还处理 $open_mode 和 $context 但这与该问题无关）：
<?php
class SerializableFileObject extends SplFileObject implements Serializable
{
public function serialize()
{
return $this->getRealPath();
}
public function unserialize($serialized)
{
$this->__construct($serialized);
}
}
但 5.3 仍然抛出fatal：
PHP Fatal error: Class SerializableFileObject could not implement interface Serializable in Unknown on line 0
我还尝试添加魔术 __sleep 和 __wakeup 方法，但无济于事。
Google 似乎对此了解不多，所以我想知道是否可以在 5.3 中序列化 SplFileObject。
更新：似乎这个问题没有答案（参见我的评论）。
I'm trying to serialize a SplFileObject, which fails silently in 5.2 and throws a fatal in 5.3. So far, I've fixed the problem in 5.2 by subclassing SplFileObject and implementing the Serializable interface using the (simplified) following code (full version also handles $open_mode and $context but that's not relevant to that question):
<?php
class SerializableFileObject extends SplFileObject implements Serializable
{
public function serialize()
{
return $this->getRealPath();
}
public function unserialize($serialized)
{
$this->__construct($serialized);
}
}
but 5.3 still throws a fatal:
PHP Fatal error: Class SerializableFileObject could not implement interface Serializable in Unknown on line 0
I also tried adding magic __sleep and __wakeup methods, to no avail.
Google doesn't seem to know much about that, so I'm left wondering if it's even possible to serialize an SplFileObject in 5.3.
UPDATE: seems like that question doesn't have an answer (cf my comment).
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显然你不被允许序列化它。在 cli 模式下进行了测试，这就是我得到的结果：
考虑到资源（mysql 连接、文件处理程序）无法序列化，并且
SplFileObject全部基于文件资源，因此没有太多徘徊。Apparently you're not allowed to serialize it. Tested in cli mode and this is what I've got:
Not much wandering considering that resources (mysql connection, file handlers) cannot be serialized, and
SplFileObjectis all based around a file resource.