版本	说明
8.4.0	所有类常量现已类型化。
8.4.0	新增 `ReflectionProperty::IS_VIRTUAL`、`ReflectionProperty::IS_PRIVATE_SET`、`ReflectionProperty::IS_PROTECTED_SET`、`ReflectionProperty::IS_ABSTRACT`, 和 `ReflectionProperty::IS_FINAL`。
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::getHook — Returns a reflection object for a specified hook
ReflectionProperty::getHooks — Returns an array of all hooks on this property
ReflectionProperty::getModifiers — Gets the property modifiers
ReflectionProperty::getName — Gets property name
ReflectionProperty::getRawValue — Returns the value of a property, bypassing a get hook if defined
ReflectionProperty::getSettableType — Returns the parameter type of a setter hook
ReflectionProperty::getType — Gets a property's type
ReflectionProperty::getValue — Gets value
ReflectionProperty::hasDefaultValue — Checks if property has a default value declared
ReflectionProperty::hasHook — Returns whether the property has a given hook defined
ReflectionProperty::hasHooks — Returns whether the property has any hooks defined
ReflectionProperty::hasType — Checks if property has a type
ReflectionProperty::isAbstract — Determines if a property is abstract
ReflectionProperty::isDefault — Checks if property is a default property
ReflectionProperty::isDynamic — Checks if property is a dynamic property
ReflectionProperty::isFinal — Determines if this property is final or not
ReflectionProperty::isInitialized — Checks whether a property is initialized
ReflectionProperty::isLazy — Checks whether a property is lazy
ReflectionProperty::isPrivate — Checks if property is private
ReflectionProperty::isPrivateSet — Checks if property is private for writing
ReflectionProperty::isPromoted — Checks if property is promoted
ReflectionProperty::isProtected — Checks if property is protected
ReflectionProperty::isProtectedSet — Checks whether the property is protected for writing
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::isVirtual — Determines if a property is virtual
ReflectionProperty::setAccessible — Set property accessibility
ReflectionProperty::setRawValue — Sets the value of a property, bypassing a set hook if defined
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...

down

mitgath at gmail dot com ¶

19 days ago

There is way to get property type without reflection.
Not very clear, but there is:

<?php

function getPropType(object $object, string $propName): string
{
    try {
        $object->{$propName} = new class {};
    } catch (\TypeError $e) {
        // @hint: question mark in type can be used to detect if property is nullable
        if (preg_match('/of type \??(.*)$/', $e->getMessage(), $m)) {
            return $m[1];
        }
        throw $e;
    } catch (\Error $e) {
        // property doesn't exist or is not public
        throw $e;
    }
    throw new \TypeError(sprintf('Property %s of class %s has no type', $propName, $object::class));
    // alternatively return 'mixed';
}
?>

note: in case you need access to private/protected properties its easy to change this to be embedded in any class:

<?php

trait PropertyTypeResolver
{
    public function getPropType(string $propName): string
    {
        try {
            $this->{$propName} = new class {};
        } catch (\TypeError $e) {
            // @hint: question mark in type can be used to detect if property is nullable
            if (preg_match('/of type \??(.*)$/', $e->getMessage(), $m)) {
                return $m[1];
            }
            throw $e;
        } catch (\Error $e) {
            // property doesn't exist
            throw $e;
        }
        throw new \TypeError(sprintf('Property %s of class %s has no type', $propName, $this::class));
        // alternatively return 'mixed';
    }
}
?>

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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