How to serialize an SplFileObject with PHP 5.3?
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开发者_JS百科 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).
Apparently you're not allowed to serialize it. Tested in cli mode and this is what I've got:
Warning: Uncaught exception 'Exception' with message 'Serialization of 'SplFileObject' is not allowed' in php shell code:1
Not much wandering considering that resources (mysql connection, file handlers) cannot be serialized, and SplFileObject
is all based around a file resource.
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