PHP unspected "Abstract class MyClass cannot be instantiated"

[pine3ree]

Apache NetBeans version

Apache NetBeans 18

What happened

An "Abstract class SomeClass cannot be instantiated" appears when it shouldn't.
This seems a class-variable name collision bug. Changing the variable name, or reassigning it solves the issue.

How to reproduce

Create a php file with the following content and open it:

<?php

interface MyClassInterface
{
     public function doSomething();
}

abstract class MyClass
{
    public function doSomething()
    {

    }

     abstract public function doSomethingElse();
}

class MySubClass extends MyClass implements MyClassInterface
{
    public function doSomethingElse()
    {

    }
}

class MyClassFactory
{
    public function buildObject(string $myClass): ?MyClass
    {
        if (class_exists($myClass) && is_subclass_of($myClass, MyClass::class)) {
            // This causes "can not be instantiated error"
            $myObject = new $myClass(); // WORKS!
            // do something with $myObject
            return $myObject; // WORKS!

            // Just using another variable name prevents the bug
            $myFQCN = $myClass;
            $myObject = new $myFQCN();
            // do something with $myObject
            return $myObject;
        }

        return null;
    }

    // no error
    public function createObject(string $myFQCN): ?MyClass
    {
        if (class_exists($myFQCN) && is_subclass_of($myFQCN, MyClass::class)) {
            $myObject = new $myFQCN();
            // do something with $myObject
            return $myObject;
        }

        return null;
    }
}

$factory = new MyClassFactory();

$myObject1 = $factory->buildObject(MySubClass::class);
$myObject2 = $factory->createObject(MySubClass::class);

var_dump($myObject1);
var_dump($myObject2);

Did this work correctly in an earlier version?

No / Don't know

Operating System

mint/ubuntu 22.04

JDK

java-11-openjdk-amd64

Apache NetBeans packaging

Apache NetBeans binary zip

Anything else

Are you willing to submit a pull request?

No

[junichi11]

@pine3ree Reproducible. Thank you for your report.