ReflectionClass::getAttributes

(PHP 8)

ReflectionClass::getAttributesGets Attributes

Açıklama

public ReflectionClass::getAttributes(?string $name = null, int $flags = 0): array

Returns all attributes declared on this class as an array of ReflectionAttribute.

Uyarı

Bu işlev hala belgelendirilmemiştir; sadece değiştirge listesi mevcuttur.

Değiştirgeler

name

flags

Dönen Değerler

Array of attributes, as a ReflectionAttribute object.

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User Contributed Notes 2 notes

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2
sergiolibe at gmail dot com
5 months ago
When using getAttributes() with specific attribute class and flags, flag 0 will return just matching attributes with specified class, and 2 will return matching attributes with specified class and children of that class:
<?php
   
#[Attribute(\Attribute::TARGET_CLASS)]
   
class SomeAttribute {}

   
#[Attribute(\Attribute::TARGET_CLASS)]
   
class ChildAttribute extends SomeAttribute {}

   
#[SomeAttribute]
    #[SomeChildAttribute]
   
class SomeClass {}

   
$rc = new ReflectionClass(SomeClass::class);

   
$r_atts = $rc->getAttributes(SomeAttribute::class, 0); // 0 is default, just given class
   
echo json_encode(array_map(fn(ReflectionAttribute $r_att) => $r_att->getName(), $r_atts)), PHP_EOL;

   
$r_atts = $rc->getAttributes(SomeAttribute::class, 2); // given class and children classes
   
echo json_encode(array_map(fn(ReflectionAttribute $r_att) => $r_att->getName(), $r_atts)), PHP_EOL;
?>

output:
["SomeAttribute"]
["SomeAttribute","ChildAttribute"]
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0
sandrenyl at gmail dot com
2 days ago
When using the method getAttributes() to fetch attributes based on a parent class, the proper flag constant is ReflectionAttribute::IS_INSTANCEOF (which equals 2 as mentionned by sergiolibe).

<?php
$reflectionClass
->getAttributes(SomeParentAttribute::class, ReflectionAttribute::IS_INSTANCEOF);
?>
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