php functions for serialization?

Question

I was asked this interview question recently and I didn't know about this:

"Which PHP functions can be used to customize the serialization process of an object?"

Any sample implementation will be of great help to understand.

Zbynek Vyskovsky - kvr000 · Accepted Answer · 2016-02-07 19:47:29Z

1

Clearly described in official documentation for Serializable interace - serialize and unserialize are the ones: http://php.net/manual/en/class.serializable.php

The old way is to implement methods __sleep and __wakeup which were supposed to remove references to runtime resources and reinitialize them respectively. This is not supported if the class implements Serializable mentioned earlier.

edited Feb 7, 2016 at 19:47

answered Feb 7, 2016 at 18:59

Zbynek Vyskovsky - kvr000

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1 Comment

Devon Bessemer Over a year ago

You can still use __sleep() and __wakeup(), they are not deprecated or removed as one may get the idea from your post. The Serializable interface just provides access to protected data.

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