ReflectionProperty::getValue()

(PHP 5, PHP 7)

Gets value

说明

publicReflectionProperty::getValue([object $object] ): mixed

Gets the property's value.

参数

$object

If the property is non-static an object must be provided to fetch the property from. If you want to fetch the default property without providing an object useReflectionClass::getDefaultProperties()instead.

返回值

The current value of the property.

错误／异常

Throws aReflectionExceptionif the property is inaccessible. You can make a protected or private property accessible usingReflectionProperty::setAccessible().

范例

Example #1ReflectionProperty::getValue()example

<?php
class Foo {
    public static $staticProperty = 'foobar';
    
    public $property = 'barfoo';
    protected $privateProperty = 'foofoo';
}
$reflectionClass = new ReflectionClass('Foo');
var_dump($reflectionClass->getProperty('staticProperty')->getValue());
var_dump($reflectionClass->getProperty('property')->getValue(new Foo));
$reflectionProperty = $reflectionClass->getProperty('privateProperty');
$reflectionProperty->setAccessible(true);
var_dump($reflectionProperty->getValue(new Foo));
?>

以上例程会输出：

string(6) "foobar"
string(6) "barfoo"
string(6) "foofoo"

参见

• ReflectionProperty::setValue() Set property value
• ReflectionProperty::setAccessible() Set property accessibility
• ReflectionClass::getDefaultProperties() 获取默认属性
• ReflectionClass::getStaticPropertyValue() 获取静态（static）属性的值

To allow protected and private properties to be accessed, you should use
ReflectionProperty::setAccessible(bool $accessible):
<?php
/** Class Foo with protected and private members */
class Foo {
  protected $bar = 'barrr!';
  private $baz = 'bazzz!';
}
$reflFoo = new ReflectionClass('Foo');
$reflBar = $reflFoo->getProperty('bar');
$reflBaz = $reflFoo->getProperty('baz');
// Set private and protected members accessible for getValue/setValue
$reflBar->setAccessible(true);
$reflBaz->setAccessible(true);
$foo = new Foo();
echo $reflBar->getValue($foo); // will output "barrr!"
echo $reflBaz->getValue($foo); // will output "bazzz!"
// You can also setValue
$reflBar->setValue($foo, "new value");
echo $reflBar->getValue($foo); // will output "new value"
?>