.. _reflectionproperty::getdefaultvalue()-for-a-property-without-a-default-value-is-deprecated,: ReflectionProperty::getDefaultValue() for a property without a default value is deprecated, use ReflectionProperty::hasDefaultValue() to check if the default value exists -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- .. meta:: :description: ReflectionProperty::getDefaultValue() for a property without a default value is deprecated, use ReflectionProperty::hasDefaultValue() to check if the default value exists: ``ReflectionProperty::getDefaultValue()`` returns ``null`` both when the property genuinely defaults to ``null`` and when the property has no default value at all (such as an uninitialized typed property), so the return value alone cannot tell the two cases apart. :og:image: https://php-errors.readthedocs.io/en/latest/_static/logo.png :og:type: article :og:title: ReflectionProperty::getDefaultValue() for a property without a default value is deprecated, use ReflectionProperty::hasDefaultValue() to check if the default value exists :og:description: ``ReflectionProperty::getDefaultValue()`` returns ``null`` both when the property genuinely defaults to ``null`` and when the property has no default value at all (such as an uninitialized typed property), so the return value alone cannot tell the two cases apart :og:url: https://php-errors.readthedocs.io/en/latest/messages/reflectionproperty%3A%3Agetdefaultvalue%28%29-for-a-property-without-a-default-value-is-deprecated%2C.html :og:locale: en :twitter:card: summary_large_image :twitter:site: @exakat :twitter:title: ReflectionProperty::getDefaultValue() for a property without a default value is deprecated, use ReflectionProperty::hasDefaultValue() to check if the default value exists :twitter:description: ReflectionProperty::getDefaultValue() for a property without a default value is deprecated, use ReflectionProperty::hasDefaultValue() to check if the default value exists: ``ReflectionProperty::getDefaultValue()`` returns ``null`` both when the property genuinely defaults to ``null`` and when the property has no default value at all (such as an uninitialized typed property), so the return value alone cannot tell the two cases apart :twitter:creator: @exakat :twitter:image:src: https://php-errors.readthedocs.io/en/latest/_static/logo.png .. raw:: html Description ___________ ``ReflectionProperty::getDefaultValue()`` returns ``null`` both when the property genuinely defaults to ``null`` and when the property has no default value at all (such as an uninitialized typed property), so the return value alone cannot tell the two cases apart. Calling it for a property that has no default value is now deprecated in favour of an explicit existence check. Example _______ .. code-block:: php getDefaultValue()); ?> Literal Examples **************** + ReflectionProperty::getDefaultValue() for a property without a default value is deprecated, use ReflectionProperty::hasDefaultValue() to check if the default value exists Solutions _________ + Call ``ReflectionProperty::hasDefaultValue()`` first, and only call ``getDefaultValue()`` once a default value is confirmed to exist. Related Error Messages ______________________ + :ref:`reflectionclass::getconstant()-for-a-non-existent-constant-is-deprecated,` See Also ________ + `ReflectionProperty::getDefaultValue `_ + `ReflectionProperty::hasDefaultValue `_ Changed Behavior ________________ This error may appear following an evolution in behavior, in previous versions. See `ReflectionProperty::getDefaultValue `_.