PHP 8.4.2 Released!

    ReflectionProperty::getValue

    (PHP 5, PHP 7, PHP 8)

    ReflectionProperty::getValue — Gets value

    Опис

    public ReflectionProperty::getValue(?object $object = null): mixed

    Gets the property's value.

    Параметри

    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.

    Значення, що повертаються

    The current value of the property.

    Журнал змін

    Версія Опис
    8.1.0 Private and protected properties can be accessed by ReflectionProperty::getValue() right away. Previously, they needed to be made accessible by calling ReflectionProperty::setAccessible(); otherwise a ReflectionException was thrown.
    8.0.0 object is nullable now.

    Приклади

    Приклад #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');
    $reflectionProperty->setAccessible(true); // only required prior to PHP 8.1.0
    var_dump($reflectionProperty->getValue(new Foo));
    ?>

    Поданий вище приклад виведе:

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

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    User Contributed Notes 1 note

    up
    9
    sergiy dot sokolenko at gmail dot com
    14 years ago
    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"
    ?>
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