That includes the PDO object, which is generally stored in GLOBALS because it can be used all over the place.All other support posts I found mention looking into process isolation, which does not solve the problem.This issue was introduced in 5.6.30, and does not exist in 5.6.29.Unfortunately the data structures that showed this effect are too complicated to include, and my effort to create a smaller reproducable case was not successful.
When unserializing the top-level class, the wakeup() function on the SplFixedArray and ImmutableDateTime instances did not get called. If you cant provide a reproduce case that shows the problem in PHP 7, it is unlikely that anyone would look at this. If the latter, then this is indeed how unserialization behaves now: wakeup() will only be called at the very end of the unserialization, which also means that Serializable::unserialize() methods (unfortunately) will see the objects prior to wakeup(). If this is the problem youre experiencing, Im sorry to say that this is unlikely to change -- delaying wakeup() calls until after::unserialize() is an important part of the security issue being fixed here. The only alternative to this would be to remove the serialization context sharing for Serialization classes, which we believe to be a larger backwards compatibility break. Cakephp You Cannot Serialize Or Unserialize Pdo Instances Code That FailedIm sure you can now create a simple test case - The code that failed here is in the CakePHP framework, and has this innocuous construct (edited for brevity). It is expected that when the SplFixedArray instance is rehydrated, it is now complete and can be referenced. In 5.6.29 (and of course every version before) this works correctly, but in 5.6.30 the count(SplFixedArray) returns 0 because wakeup() has not been called on it. All object-oriented languages guarantee that class instances are completely instantiated before they are able to be accessed by the developer. See for a sense of how much developer time is being wasted, and also with PHP 7.x. The good news: as of PHP 7.4.0, there is a third serialization.
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