ReflectionClass::getAttributes
(PHP 8)
ReflectionClass::getAttributes — Gets Attributes
Beschreibung
$name
= null
, int $flags
= 0): arrayReturns all attributes declared on this class as an array of ReflectionAttribute.
Parameter-Liste
-
name
-
Filter the results to include only ReflectionAttribute instances for attributes matching this class name.
-
flags
-
Flags for determining how to filter the results, if
name
is provided.Default is
0
which will only return results for attributes that are of the classname
.The only other option available, is to use
ReflectionAttribute::IS_INSTANCEOF
, which will instead useinstanceof
for filtering.
Rückgabewerte
Array of attributes, as a ReflectionAttribute object.
Beispiele
Beispiel #1 Basic usage
<?php
#[Attribute]
class Fruit {
}
#[Attribute]
class Red {
}
#[Fruit]
#[Red]
class Apple {
}
$class = new ReflectionClass('Apple');
$attributes = $class->getAttributes();
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
Array ( [0] => Fruit [1] => Red )
Beispiel #2 Filtering results by class name
<?php
#[Attribute]
class Fruit {
}
#[Attribute]
class Red {
}
#[Fruit]
#[Red]
class Apple {
}
$class = new ReflectionClass('Apple');
$attributes = $class->getAttributes('Fruit');
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
Array ( [0] => Fruit )
Beispiel #3 Filtering results by class name, with inheritance
<?php
interface Color {
}
#[Attribute]
class Fruit {
}
#[Attribute]
class Red implements Colour {
}
#[Fruit]
#[Red]
class Apple {
}
$class = new ReflectionClass('Apple');
$attributes = $class->getAttributes('Colour', ReflectionAttribute::IS_INSTANCEOF);
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
Array ( [0] => Red )
Siehe auch
- ReflectionClassConstant::getAttributes() - Gets Attributes
- ReflectionFunctionAbstract::getAttributes() - Gets Attributes
- ReflectionParameter::getAttributes() - Gets Attributes
- ReflectionProperty::getAttributes() - Gets Attributes