ReflectionProperty::IS_STATIC: 表示 static 属性。在 PHP 7.4.0 之前，值为 1。
ReflectionProperty::IS_READONLY: 表示 readonly 属性。自 PHP 8.1.0 起可用。
ReflectionProperty::IS_PUBLIC: 表示 public 属性。在 PHP 7.4.0 之前，值为 256。
ReflectionProperty::IS_PROTECTED: 表示 protected 属性。在 PHP 7.4.0 之前，值为 512。
ReflectionProperty::IS_PRIVATE: 表示 private 属性。在 PHP 7.4.0 之前，值为 1024。

注意:
这些常量的值可能会在不同 PHP 版本间发生更改。建议始终使用常量而不直接依赖值。

更新日志

版本	说明
8.0.0	已移除 ReflectionProperty::export()。

ReflectionProperty::__clone — Clone
ReflectionProperty::__construct — Construct a ReflectionProperty object
ReflectionProperty::export — Export
ReflectionProperty::getAttributes — Gets Attributes
ReflectionProperty::getDeclaringClass — Gets declaring class
ReflectionProperty::getDefaultValue — Returns the default value declared for a property
ReflectionProperty::getDocComment — Gets the property doc comment
ReflectionProperty::getModifiers — Gets the property modifiers
ReflectionProperty::getName — Gets property name
ReflectionProperty::getType — Gets a property's type
ReflectionProperty::getValue — Gets value
ReflectionProperty::hasDefaultValue — Checks if property has a default value declared
ReflectionProperty::hasType — Checks if property has a type
ReflectionProperty::isDefault — Checks if property is a default property
ReflectionProperty::isDynamic — Checks if property is a dynamic property
ReflectionProperty::isInitialized — Checks whether a property is initialized
ReflectionProperty::isLazy — Checks whether a property is lazy
ReflectionProperty::isPrivate — Checks if property is private
ReflectionProperty::isPromoted — Checks if property is promoted
ReflectionProperty::isProtected — Checks if property is protected
ReflectionProperty::isPublic — Checks if property is public
ReflectionProperty::isReadOnly — 检查属性是否为只读
ReflectionProperty::isStatic — Checks if property is static
ReflectionProperty::setAccessible — Set property accessibility
ReflectionProperty::setRawValueWithoutLazyInitialization — Set raw property value without triggering lazy initialization
ReflectionProperty::setValue — Set property value
ReflectionProperty::skipLazyInitialization — Marks property as non-lazy
ReflectionProperty::__toString — To string

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rasmus at mindplay dot dk ¶

14 years ago

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...

ReflectionProperty 类

简介

类摘要

属性

预定义常量

ReflectionProperty 修饰符

更新日志

目录

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