ReflectionClass 类

    (PHP 5, PHP 7, PHP 8)

    简介

    ReflectionClass 类报告了一个类的有关信息。

    类摘要

    class ReflectionClass implements Reflector {
    /* 常量 */
    public const int IS_IMPLICIT_ABSTRACT;
    public const int IS_EXPLICIT_ABSTRACT;
    public const int IS_FINAL;
    public const int IS_READONLY;
    public const int SKIP_INITIALIZATION_ON_SERIALIZE;
    public const int SKIP_DESTRUCTOR;
    /* 属性 */
    public string $name;
    /* 方法 */
    public function __construct(object|string $objectOrClass)
    public static function export(mixed $argument, bool $return = false): string
    public function getAttributes(?string $name = null, int $flags = 0): array
    public function getConstant(string $name): mixed
    public function getConstants(?int $filter = null): array
    public function getConstructor(): ?ReflectionMethod
    public function getDefaultProperties(): array
    public function getDocComment(): string|false
    public function getEndLine(): int|false
    public function getExtension(): ?ReflectionExtension
    public function getExtensionName(): string|false
    public function getFileName(): string|false
    public function getInterfaceNames(): array
    public function getInterfaces(): array
    public function getLazyInitializer(object $object): ?callable
    public function getMethod(string $name): ReflectionMethod
    public function getMethods(?int $filter = null): array
    public function getModifiers(): int
    public function getName(): string
    public function getNamespaceName(): string
    public function getParentClass(): ReflectionClass|false
    public function getProperties(?int $filter = null): array
    public function getProperty(string $name): ReflectionProperty
    public function getReflectionConstant(string $name): ReflectionClassConstant|false
    public function getReflectionConstants(?int $filter = null): array
    public function getShortName(): string
    public function getStartLine(): int|false
    public function getStaticProperties(): array
    public function getStaticPropertyValue(string $name, mixed &$def_value = ?): mixed
    public function getTraitAliases(): array
    public function getTraitNames(): array
    public function getTraits(): array
    public function hasConstant(string $name): bool
    public function hasMethod(string $name): bool
    public function hasProperty(string $name): bool
    public function implementsInterface(ReflectionClass|string $interface): bool
    public function initializeLazyObject(object $object): object
    public function inNamespace(): bool
    public function isAbstract(): bool
    public function isAnonymous(): bool
    public function isCloneable(): bool
    public function isEnum(): bool
    public function isFinal(): bool
    public function isInstance(object $object): bool
    public function isInstantiable(): bool
    public function isInterface(): bool
    public function isInternal(): bool
    public function isIterable(): bool
    public function isReadOnly(): bool
    public function isSubclassOf(ReflectionClass|string $class): bool
    public function isTrait(): bool
    public function isUninitializedLazyObject(object $object): bool
    public function isUserDefined(): bool
    public function markLazyObjectAsInitialized(object $object): object
    public function newInstance(mixed ...$args): object
    public function newInstanceArgs(array $args = []): ?object
    public function newInstanceWithoutConstructor(): object
    public function newLazyGhost(callable $initializer, int $options = 0): object
    public function newLazyProxy(callable $factory, int $options = 0): object
    public function resetAsLazyGhost(object $object, callable $initializer, int $options = 0): void
    public function resetAsLazyProxy(object $object, callable $factory, int $options = 0): void
    public function setStaticPropertyValue(string $name, mixed $value): void
    public function __toString(): string
    }

    属性

    name

    类名。只读，尝试赋值时抛出 ReflectionException。

    预定义常量

    ReflectionClass 修饰符

    ReflectionClass::IS_IMPLICIT_ABSTRACT int

    表示该类是 abstract，因为有一些抽象方法。

    ReflectionClass::IS_EXPLICIT_ABSTRACT int

    表示该类是 abstract，因为已明确定义。

    ReflectionClass::IS_FINAL int

    表示该类是 final。

    ReflectionClass::IS_READONLY int

    表示该类是 readonly。

    ReflectionClass::SKIP_INITIALIZATION_ON_SERIALIZE int
    表示 serialize() 不应触发延迟对象的初始化。
    ReflectionClass::SKIP_DESTRUCTOR int
    表示将对象重置为延迟时不应调用对象析构方法。

    更新日志

    版本 说明
    8.4.0 所有类常量现已类型化。
    8.0.0 移除 ReflectionClass::export()。

    目录

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    ＋添加备注

    用户贡献的备注 4 notes

    up
    40
    danbettles at yahoo dot co dot uk
    17 years ago
    To reflect on a namespaced class in PHP 5.3, you must always specify the fully qualified name of the class - even if you've aliased the containing namespace using a "use" statement.

So instead of:

<?php
use App\Core as Core;
$oReflectionClass = new ReflectionClass('Core\Singleton');
?>

You would type:

<?php
use App\Core as Core;
$oReflectionClass = new ReflectionClass('App\Core\Singleton');
?>
    up
    25
    Anonymous
    14 years ago
    Unserialized reflection class cause error.

<?php
/**
 * abc
 */
class a{}

$ref = new ReflectionClass('a');
$ref = unserialize(serialize($ref));
var_dump($ref);
var_dump($ref->getDocComment());

// object(ReflectionClass)#2 (1) {
//   ["name"]=>
//   string(1) "a"
// }
// PHP Fatal error:  ReflectionClass::getDocComment(): Internal error: Failed to retrieve the reflection object
?>
    up
    21
    Anonymous
    13 years ago
    Reflecting an alias will give you a reflection of the resolved class.

<?php

class X {
    
}

class_alias('X','Y');
class_alias('Y','Z');
$z = new ReflectionClass('Z');
echo $z->getName(); // X

?>
    up
    4
    featherbits
    5 years ago
    In order to get class attributes look here (php8)
https://www.php.net/manual/en/language.attributes.reflection.php
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