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    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;
    /* 属性 */
    public string $name;
    /* 方法 */
    public __construct(object|string $objectOrClass)
    public static export(mixed $argument, bool $return = false): string
    public getAttributes(?string $name = null, int $flags = 0): array
    public getConstant(string $name): mixed
    public getConstants(?int $filter = null): array
    public getConstructor(): ?ReflectionMethod
    public getDefaultProperties(): array
    public getDocComment(): string|false
    public getEndLine(): int|false
    public getExtension(): ?ReflectionExtension
    public getExtensionName(): string|false
    public getFileName(): string|false
    public getInterfaceNames(): array
    public getInterfaces(): array
    public getMethod(string $name): ReflectionMethod
    public getMethods(?int $filter = null): array
    public getModifiers(): int
    public getName(): string
    public getNamespaceName(): string
    public getParentClass(): ReflectionClass|false
    public getProperties(?int $filter = null): array
    public getProperty(string $name): ReflectionProperty
    public getReflectionConstant(string $name): ReflectionClassConstant|false
    public getReflectionConstants(?int $filter = null): array
    public getShortName(): string
    public getStartLine(): int|false
    public getStaticProperties(): array
    public getStaticPropertyValue(string $name, mixed &$def_value = ?): mixed
    public getTraitAliases(): array
    public getTraitNames(): array
    public getTraits(): array
    public hasConstant(string $name): bool
    public hasMethod(string $name): bool
    public hasProperty(string $name): bool
    public implementsInterface(ReflectionClass|string $interface): bool
    public inNamespace(): bool
    public isAbstract(): bool
    public isAnonymous(): bool
    public isCloneable(): bool
    public isEnum(): bool
    public isFinal(): bool
    public isInstance(object $object): bool
    public isInstantiable(): bool
    public isInterface(): bool
    public isInternal(): bool
    public isIterable(): bool
    public isReadOnly(): bool
    public isSubclassOf(ReflectionClass|string $class): bool
    public isTrait(): bool
    public isUserDefined(): bool
    public newInstance(mixed ...$args): object
    public newInstanceArgs(array $args = []): ?object
    public newInstanceWithoutConstructor(): object
    public setStaticPropertyValue(string $name, mixed $value): void
    public __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

    表示该类是 abstract，因为有一些抽象方法。

    ReflectionClass::IS_EXPLICIT_ABSTRACT

    表示该类是 abstract，因为已明确定义。

    ReflectionClass::IS_FINAL

    表示该类是 final。

    ReflectionClass::IS_READONLY

    表示该类是 readonly。

    更新日志

    版本 说明
    8.0.0 移除 ReflectionClass::export()。

    目录

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    User Contributed Notes 5 notes

    up
    32
    danbettles at yahoo dot co dot uk
    15 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
    18
    Anonymous
    11 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
    20
    Anonymous
    13 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
    1
    featherbits
    3 years ago
    In order to get class attributes look here (php8)
    https://www.php.net/manual/en/language.attributes.reflection.php
    up
    -25
    YoungOfCthulhu
    9 years ago
    It is also possible to do reflection from within the class and get the methods for instance.

    <?php

    class test
    {
        private     $test = "";

        public function     setTest($test)
        {
                $this->test = $test;
            return     $this;
        }

        public function     getTest()
        {
            return     $this->test;
        }
       
        public function     run(){
                $class = new ReflectionClass('test');
                $methods = $class->getMethods();
                var_dump($methods);
        }
    }

    Called from another php file you get the proper result:
    array(    3) {
      [    0]=>
      &    object(ReflectionMethod)#3 (2) {
            ["name"]=>
            string(8) "setTest"
            ["class"]=>
            string(4) "test"
          }
      [    1]=>
      &    object(ReflectionMethod)#4 (2) {
            ["name"]=>
            string(8) "getTest"
            ["class"]=>
            string(4) "test"
          }
      [    2]=>
      &    object(ReflectionMethod)#5 (2) {
            ["name"]=>
            string(3) "run"
            ["class"]=>
            string(4) "test"
          }
    }
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