ReflectionProperty::getValue()
(PHP 5, PHP 7)
Gets value
说明
public ReflectionProperty::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" ?>