The ReflectionProperty class
(PHP 5)
Introduction
The ReflectionProperty class reports information about classes properties.
Class synopsis
Properties
- name
-
Name of the property. Read-only, throws ReflectionException in attempt to write.
- class
-
Name of the class where the property is defined. Read-only, throws ReflectionException in attempt to write.
Table of Contents
- ReflectionProperty::__clone — Clone
- ReflectionProperty::__construct — Construct a ReflectionProperty object
- ReflectionProperty::export — Export
- ReflectionProperty::getDeclaringClass — Gets declaring class
- ReflectionProperty::getDocComment — Gets doc comment
- ReflectionProperty::getModifiers — Gets modifiers
- ReflectionProperty::getName — Gets property name
- ReflectionProperty::getValue — Gets value
- ReflectionProperty::isDefault — Checks if default value
- ReflectionProperty::isPrivate — Checks if property is private
- ReflectionProperty::isProtected — Checks if property is protected
- ReflectionProperty::isPublic — Checks if property is public
- ReflectionProperty::isStatic — Checks if property is static
- ReflectionProperty::setAccessible — Set property accessibility
- ReflectionProperty::setValue — Set property value
- ReflectionProperty::__toString — To string
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения, относящиеся к переменным и типам
- Введение
- Установка и настройка
- Предопределенные константы
- Примеры
- Расширение
- Класс Reflection
- Класс ReflectionClass
- Класс ReflectionZendExtension
- Класс ReflectionExtension
- Класс ReflectionFunction
- Класс ReflectionFunctionAbstract
- Класс ReflectionMethod
- Класс ReflectionObject
- Класс ReflectionParameter
- Класс ReflectionProperty
- ReflectionType
- ReflectionGenerator
- Интерфейс Reflector
- Класс ReflectionException
Коментарии
I think a more accurate explanation is this:
The Reflection classes are designed to reflect upon the source code of an application, not on any runtime information.
I think you misunderstand the ReflectionProperty constructor in your example above. The fact that it accepts an object as argument is just a convenience feature - you are actually inspecting the class of that object, not the object itself, so it's basically equivalent to:
<?php
// works fine
$Reflection = new ReflectionProperty(get_class($a), 'a');
// throws exception
$Reflection = new ReflectionProperty(get_class($a), 'foo');
?>
Getting the class of the object you're passing in is implied, since inspecting a defined property is the purpose of this class.
In your example, $a->foo is a dynamic member - it is not defined as a member of class, so there is no defining class reference, line number, default value, etc. - which means, there is nothing to reflect upon.
Clearly this very useful library could use some real documentation...