ReflectionProperty::getValue
(PHP 5)
ReflectionProperty::getValue — Gets value
说明
$object
] )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 use ReflectionClass::getDefaultProperties() instead.
返回值
The current value of the property.
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::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
用户评论:
[#1] sergiy dot sokolenko at gmail dot com [2010-06-28 15:48:31]
To allow protected and private properties to be accessed, you should use
ReflectionProperty::setAccessible(bool $accessible):
<?php
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"
?>