<?php
    /**
     * 使用foreach遍历可访问的属性（变量）
    */

    class ClassA{
        public $varA="varA";
        protected $varB="varB";
        private $varC="varC";
    
        public function fnA(){
            echo "fnA".PHP_EOL;
        }
        protected function fnB(){
            echo "fnB".PHP_EOL;
        }

        private function fnC(){
            echo "fnC".PHP_EOL;
        }
    }

    $obj=new ClassA();
    foreach($obj as $key => $value){
        echo "$key:$value".PHP_EOL;
    }
?>