(PHP 8)
ReflectionProperty::getAttributes — Gets Attributes
Returns all attributes declared on this class property as an array of ReflectionAttribute.
name
过滤结果,匹配此类名,仅包含 ReflectionAttribute 实例的属性。
flags
如果提供了 name
,则用于确定如何过滤结果的 flag。
默认值为 0
,这将导致返回的结果只属于类 name
的属性。
唯一可用的其他选项是使用 ReflectionAttribute::IS_INSTANCEOF
,它将改为使用 instanceof
进行过滤。
Array of attributes, as a ReflectionAttribute object.
示例 #1 Basic usage
<?php
#[Attribute]
class Fruit {
}
#[Attribute]
class Red {
}
class Basket {
#[Fruit]
#[Red]
public string $apple = 'apple';
}
$property = new ReflectionProperty('Basket', 'apple');
$attributes = $property->getAttributes();
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
以上示例会输出:
Array ( [0] => Fruit [1] => Red )
示例 #2 Filtering results by class name
<?php
#[Attribute]
class Fruit {
}
#[Attribute]
class Red {
}
class Basket {
#[Fruit]
#[Red]
public string $apple = 'apple';
}
$property = new ReflectionProperty('Basket', 'apple');
$attributes = $property->getAttributes('Fruit');
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
以上示例会输出:
Array ( [0] => Fruit )
示例 #3 Filtering results by class name, with inheritance
<?php
interface Color {
}
#[Attribute]
class Fruit {
}
#[Attribute]
class Red implements Color {
}
class Basket {
#[Fruit]
#[Red]
public string $apple = 'apple';
}
$property = new ReflectionProperty('Basket', 'apple');
$attributes = $property->getAttributes('Color', ReflectionAttribute::IS_INSTANCEOF);
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
以上示例会输出:
Array ( [0] => Red )