ReflectionProperty::setValue

(PHP 5)

ReflectionProperty::setValue — Set property value

说明

public void ReflectionProperty::setValue ( object $object , mixed $value )

public void ReflectionProperty::setValue ( mixed $value )

Sets (changes) the property's value.

参数

object: If the property is non-static an object must be provided to change the property on. If the property is static this parameter is left out and only value needs to be provided.
value: The new value.

返回值

没有返回值。

错误／异常

Throws a ReflectionException if the property is inaccessible. You can make a protected or private property accessible using ReflectionProperty::setAccessible() .

范例

Example #1 ReflectionProperty::setValue() example

  <?php
 class  Foo  {
    public static  $staticProperty ;
    
    public  $property ;
    protected  $privateProperty ;
}

 $reflectionClass  = new  ReflectionClass ( 'Foo' );

 $reflectionClass -> getProperty ( 'staticProperty' )-> setValue ( 'foo' );
 var_dump ( Foo :: $staticProperty );

 $foo  = new  Foo ;

 $reflectionClass -> getProperty ( 'property' )-> setValue ( $foo ,  'bar' );
 var_dump ( $foo -> property );

 $reflectionProperty  =  $reflectionClass -> getProperty ( 'privateProperty' );
 $reflectionProperty -> setAccessible ( true );
 $reflectionProperty -> setValue ( $foo ,  'foobar' );
 var_dump ( $reflectionProperty -> getValue ( $foo ));
 ?>

以上例程会输出：

string(3) "foo"
string(3) "bar"
string(6) "foobar"

参见

ReflectionProperty::getValue() - Gets value
ReflectionProperty::setAccessible() - Set property accessibility
ReflectionClass::setStaticPropertyValue() - 设置静态属性的值

用户评论:

[#1] me at ircmaxell dot om [2011-06-22 09:27:47]

You can use ReflectionProperty::setValue to set the value on static properties as well as regular instance properties. Simply pass null in place of the instance:

<?php class Foo { protected static $bar = null; public static function sayBar() { echo self::$bar; } } $r = new ReflectionProperty('Foo', 'bar'); $r->setAccessible(true); $r->setValue(null, 'foo'); Foo::sayBar(); // "foo" ?>