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ReflectionClass issues with dynamic properties shadowing private parent properties #22441
Description
Description
The following code:
<?php
class Base {
private mixed $shadow;
}
#[AllowDynamicProperties]
class Child extends Base {}
$o = new Child();
$o->shadow = true;
$o->noShadow = true;
var_dump($o);
echo "\n";
$r = new ReflectionObject($o);
echo "hasProperty():\n";
var_dump($r->hasProperty('shadow'));
var_dump($r->hasProperty('noShadow'));
echo "\n";
echo "getProperty():\n";
try {
var_dump($r->getProperty('shadow'));
} catch (\Throwable $e) {
echo $e->getMessage(). "\n";
}
echo "\n";
var_dump($r->getProperty('noShadow'));
echo "\n";
echo "getProperties():\n";
var_dump($r->getProperties());Resulted in this output:
object(Child)#1 (2) {
["shadow":"Base":private]=>
uninitialized(mixed)
["shadow"]=>
bool(true)
["noShadow"]=>
bool(true)
}
hasProperty():
bool(false)
bool(true)
getProperty():
Property Child::$shadow does not exist
object(ReflectionProperty)#4 (2) {
["name"]=>
string(8) "noShadow"
["class"]=>
string(5) "Child"
}
getProperties():
array(2) {
[0]=>
object(ReflectionProperty)#4 (2) {
["name"]=>
string(6) "shadow"
["class"]=>
string(5) "Child"
}
[1]=>
object(ReflectionProperty)#5 (2) {
["name"]=>
string(8) "noShadow"
["class"]=>
string(5) "Child"
}
}
But I expected this output instead:
object(Child)#1 (2) {
["shadow":"Base":private]=>
uninitialized(mixed)
["shadow"]=>
bool(true)
["noShadow"]=>
bool(true)
}
hasProperty():
bool(true)
bool(true)
getProperty():
object(ReflectionProperty)#4 (2) {
["name"]=>
string(8) "shadow"
["class"]=>
string(5) "Child"
}
object(ReflectionProperty)#5 (2) {
["name"]=>
string(8) "noShadow"
["class"]=>
string(5) "Child"
}
getProperties():
array(2) {
[0]=>
object(ReflectionProperty)#4 (2) {
["name"]=>
string(6) "shadow"
["class"]=>
string(5) "Child"
}
[1]=>
object(ReflectionProperty)#5 (2) {
["name"]=>
string(8) "noShadow"
["class"]=>
string(5) "Child"
}
}
ReflectionClass::hasProperties() and ::getProperty() only check dynamic properties after checking for a matching property of the same name that could be a private parent property
PHP Version
8.4+
Operating System
No response
Activity
DanielEScherzer commentedon Jun 24, 2026
https://3v4l.org/Ypsq5#v8.5.8
Filing this for the record, I should be able to get to it within a few days, though if a new contributor wants to try tackling this it should be pretty easy and I'm happy to mentor/review
Report dynamic property shadowing a private parent in Reflection