php - 如何检测类属性是私有(private)的还是 protected

Question

如何不使用外部库(仅限纯 PHP)检测类属性是私有(private)的还是 protected ？如何检查是否可以从类外部设置属性？

Answer 1

使用Reflection.

<?php
    class Test {
        private $foo;
        public $bar;
    }

    $reflector = new ReflectionClass(get_class(new Test()));

    $prop = $reflector->getProperty('foo');
    var_dump($prop->isPrivate());

    $prop = $reflector->getProperty('bar');
    var_dump($prop->isPrivate());
?>