PHP Manual: Set property value

Description

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

public void ReflectionProperty::setValue(mixed $value)

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 null must 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"

ReflectionProperty::setValue

Description

Parameters

Return Values

Changelog

Examples

See Also