Is it possible to retrieve the name of an object in PHP through a method in the class definition?

Yes, it is possible to retrieve the name of an object in PHP through a method in the class definition by using the `get_class()` function. This function returns the name of the class of an object. You can create a method within the class that calls `get_class($this)` to retrieve the name of the object.

class MyClass {
    public function getObjectName() {
        return get_class($this);
    }
}

$obj = new MyClass();
echo $obj->getObjectName(); // Output: MyClass