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Thread-Topic: Problem with overwriting private property value with
 ReflectionProperty
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Date: Mon, 19 Sep 2016 08:27:02 +0000
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Subject: Problem with overwriting private property value with
 ReflectionProperty
From: stoller@leonex.de (Christian Stoller)

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Hi,

I have spent several hours with a strange problem with reflection.

There's an object of an external lib with a private field and I have to ove=
rwrite its values. Because there is no public method I am using ReflectionP=
roperty like this:

$reflProp =3D new \ReflectionProperty(Extension::class, 'classes');
$reflProp->setAccessible(true);
$reflProp->setValue($extension,['new', 'values']);

var_export($extension->getClasses());

The field is of type array and contains several entries. The problem is, th=
at the private field has not been overwritten by `$reflProp->setValue()`. I=
nstead it looked like, the array of the private field has been merged with =
my new array.

I tried different things but nothing worked. I have tried to create a small=
 script which could show the problem, but it wasn't reproducible.

The last thing I tried was, to call

var_export($reflProp->getValue($extension));

instead of

var_export($extension->getClasses());

That returns exactly the correct value. So my question is if somebody could=
 imagine why `$reflProp->getValue()` returns the value I am trying to set, =
but accessing the field with an object member method (getClasses) returns a=
 merged array.

I am using PHP 5.6.26 (x86, TS) on Windows 10.

Best regards,
Christian

Mit freundlichen Gr??en aus Paderborn

Christian Stoller
Softwareentwicklung

LEONEX Internet GmbH
Technologiepark 20
33100 Paderborn
Tel: 05251-14807-27
Fax: 05251-14807-30
HRB 8694 AG Paderborn
Gesch?ftsf?hrer: Stephan Winter

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