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This article mainly explains "how to understand the change of session in php5.3 session_is_registered () is deprecated in". The content of the explanation in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to understand the change of session in php5.3 session_is_registered () is deprecated in".

Running the code in the book in php5.3 will give you the following hints:

Function session_is_registered () is deprecated in

Function session_register () is deprecated in

It means that these two functions are disapproved and disused.

The following is the code in the php official manual, and the comments section has already stated that session_register () is not approved.

The copy code is as follows:

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