Unsetting attributes of dynamic PHP objects

Question

I have a dynamic class referenced by $row->attributes(), that has some overloaded (dynamic) properties, e.g. $row->attributes()->property1.

I want to unset property1. I've tried $row->attributes()->__unset("property1") and unset($row->attributes()->property1). No joy.

Anyone know how to do this?

I'm not sure how well calling an unset on an object property would go (or even if it's possible). Why not just set the value to null? What's the reason the property must be full extinguished? — Brad Christie
– Brad Christie, Commented Dec 30, 2010 at 6:50
Writing a function that converts the attributes of an XML tag into an associative array. Giving the user the option to set a key for that array (from an attribute value), and want to remove the attribute from that array. — bcoughlan
– bcoughlan, Commented Dec 30, 2010 at 7:07

David Kuridža · Accepted Answer · 2010-12-30 07:41:15Z

2

It's unclear from the question whether you have used this approach, if you have, I'll remove this answer.

Take a look at __unset, simple example is:

class Foo
{
    public function __unset($property)
    {
        unset($this->__my_property_holder[$property]);
    }
}

You simply need to do unset($row->attributes()->property1), and it will actually invoke Foo->__unset('property1').

answered Dec 30, 2010 at 7:41

David Kuridža

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1 Comment

bcoughlan Over a year ago

While your answer is correct, in this case the class is built into the PHP source code (SimpleXMLElement) so I can't modify it. Perhaps it is an implementation error.

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