ReflectionProperty::setValue

(PHP 5, PHP 7, PHP 8)

ReflectionProperty::setValue — Set property value

说明

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

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

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

User Contributed Notes

me at ircmaxell dot om 22-Jun-2011 09:27


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"

?>