在向类动态添加新属性后，在phpDoc中定义该类的新属性

/**
 * Class MyClass
 *
 * @property int $newProperty1 This is a new integer property.
 * @property string $newProperty2 This is a new string property.
 */
class MyClass {
    // Existing class code...
}

$obj = new MyClass();

// Accessing the dynamically added properties
$obj->newProperty1 = 123;
$obj->newProperty2 = "Hello World";

// Retrieving the values of the dynamically added properties
echo $obj->newProperty1; // Output: 123
echo $obj->newProperty2; // Output: Hello World