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    The Attribute class

    (PHP 8)

    简介

    Attributes offer the ability to add structured, machine-readable metadata information on declarations in code: Classes, methods, functions, parameters, properties and class constants can be the target of an attribute. The metadata defined by attributes can then be inspected at runtime using the Reflection APIs. Attributes could therefore be thought of as a configuration language embedded directly into code.

    类摘要

    final class Attribute {
    /* 常量 */
    const int TARGET_CLASS;
    const int TARGET_FUNCTION;
    const int TARGET_METHOD;
    const int TARGET_PROPERTY;
    const int TARGET_CLASS_CONSTANT;
    const int TARGET_PARAMETER;
    const int TARGET_ALL;
    const int IS_REPEATABLE;
    /* 属性 */
    public int $flags;
    /* 方法 */
    public __construct(int $flags = Attribute::TARGET_ALL)
    }

    预定义常量

    Attribute::TARGET_CLASS

    Attribute::TARGET_FUNCTION

    Attribute::TARGET_METHOD

    Attribute::TARGET_PROPERTY

    Attribute::TARGET_CLASS_CONSTANT

    Attribute::TARGET_PARAMETER

    Attribute::TARGET_ALL

    Attribute::IS_REPEATABLE

    属性

    flags

    目录

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