need inverted __sleep? View as Markdown

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

matt.. that's public properties on a single class - see the usecase

use case:
<?php
class base
{
 private $notToBeSerialized;

 public function __sleep()
 {
   // TODO code return instance properties excluding $notToBeSerialized
 }

}

class foo extends base
{
 private $bar;
}

class poo extends foo
{
 private $baz;
}

$p = new poo;
echo serialize($p);

Matt Wilson wrote:

mwilson@MattW-Mac:~$ php -r 'class a { public $a, $b, $c, $d; public
function __sleep() { return array_diff( array_keys( (array) $this),
array("b","c")); } } $a = new a; var_dump($a->__sleep());'
array(2) {
 [0]=>
 string(1) "a"
 [3]=>
 string(1) "d"
}

Matt Wilson wrote:

get_class_vars + array_diff

cheers but nope; as the manual says
"Returns an associative array of default public properties of the class"

need private and inherited private

Hi All,

hoping somebody can help me here..

I need to implement an inverted __sleep method, by which I mean to
specify what variables should not be included.

use case:
<?php
class base
{
private $notToBeSerialized;

public function __sleep()
{
 // TODO code return instance properties excluding $notToBeSerialized
}

}

class foo extends base
{
private $bar;
}

class poo extends foo
{
private $baz;
}

$p = new poo;
echo serialize($p);

---

I've tried using get_object_vars($this), and ReflectionObject($this)
both of which don't include all the properties of the instance.

the only way I can see to get all the properties of the instance is to
serialize($this) then parse the string, but that's just wrong and what would
sleep return on the first call to serialize.

any help greatly appreciated.

regards,

nathan