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Date: Mon, 01 Jun 2009 12:34:52 +0100
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To: Jonathan Tapicer <tapicer@gmail.com>
CC: internals@lists.php.net, Matt Wilson <shadda@gmail.com>
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Subject: Re: [PHP-DEV] need inverted __sleep?
From: nrixham@gmail.com (Nathan Rixham)

Jonathan Tapicer wrote:
> Hi,
> 
> Matt's approach works also for your usecase, casting to array returns
> all the properties of the class and base classes, but it has some
> problems: for private properties the class name is added before the
> property name, and for protected properties * is added, both things
> added are between null characters, so you can remove the added string
> with some regexp.
> 
> Another approach that will work is using ReflectionClass and the
> method getProperties, it will return all the properties (even
> private), but only of the class itself, it won't return the properties
> declared in base classes, you have the get the base class
> (get_parent_class) and recursively do the same thing for all the base
> classes.
> 
> Regards,
> Jonathan

doh, thanks Jonathan and thanks Matt - completely missed that (array) 
even though I'd been using it in a different attempt using Serializable

small note is that you do not need to remove the class names or 
suchlike, this works fine (and I assume is faster than recursive reflection)

public function __sleep()
{
   $exclude = chr(0) . __CLASS__ . chr(0) . 'notToBeSerialized';
   return array_diff(array_keys((array)$this) , array($exclude) );
}

again thanks, and apologies Matt!

Regards,

Nathan