ReflectionProperty::setValue

(PHP 5, PHP 7, PHP 8)

ReflectionProperty::setValue — Set property value

Description

publicReflectionProperty::setValue(object$object, mixed$value): void

publicReflectionProperty::setValue(mixed$value): void

Sets (changes) the property's value.

Note: As of PHP 8.3.0, calling this method with a single argument is deprecated, use ReflectionClass::setStaticPropertyValue() instead.

Parameters

object: If the property is non-static an object must be provided to change the property on. If the property is static a value of nullmust be to be provided.
value: The new value.

Return Values

No value is returned.

Changelog

Version	Description
8.3.0	Calling this method with a single argument is deprecated, ReflectionClass::setStaticPropertyValue() should be used instead to modify static properties.
8.1.0	Private and protected properties can be accessed by ReflectionProperty::setValue() right away. Previously, they needed to be made accessible by calling ReflectionProperty::setAccessible(); otherwise a ReflectionException was thrown.

Examples

Example #1 ReflectionProperty::setValue() example

<?php
class Foo {
 public static $staticProperty;

 public $property;
 protected $privateProperty;
}

$reflectionClass = new ReflectionClass('Foo');

// As of PHP 8.3, setValue should no longer be used to set static property value, use setStaticPropertyValue() instead
$reflectionClass->setStaticPropertyValue('staticProperty', 'foo');
var_dump(Foo::$staticProperty);

$foo = new Foo;

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

$reflectionProperty = $reflectionClass->getProperty('privateProperty');
$reflectionProperty->setAccessible(true); // only required prior to PHP 8.1.0
$reflectionProperty->setValue($foo, 'foobar');
var_dump($reflectionProperty->getValue($foo));
?>

The above example will output:

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