Lazy proxy calls magic methods twice

[arnaud-lb]

Description

Access to properties of a lazy proxy are forwarded to the real instance. But if the access is made by a magic method, forwarding to the real instance may call the magic method again:

#[AllowDynamicProperties]
class C {
    public $_;
    public function __set($name, $value)
    {
        var_dump(__METHOD__);
        $this->$name = $value * 2;
    }
}

$rc = new ReflectionClass(C::class);

$obj = $rc->newLazyProxy(function () {
    echo "init\n";
    return new C;
});

$obj->prop = 1;
var_dump($obj->prop);

Resulted in this output:

string(8) "C::__set"
init
string(8) "C::__set"
int(4)

But I expected this output instead:

string(8) "C::__set"
init
int(2)

PHP Version

PHP 8.4

Operating System

No response

[DanielEScherzer]

https://3v4l.org/uFRia