如何打印/回显/获取此代码中每个对象的所有属性？

Question

如何打印/回显此代码中所有 Country 对象的所有属性/属性值？我想使用'foreach'，但我不知道sintaxis。echo 语句位于最后一行代码中。谢谢！    <?php   class Country {  public $nombre;  public $poblacion;  public $idioma;  public $moneda;  public $economia;  public $deporte;}$country1 = new Country ();$country1->nombre = 'Argentina';$country1->poblacion = '40 millones';$country1->idioma = 'Castellano';$country1->moneda = 'Peso argentino';$country1->economia = 'Agro';$country1->deporte = 'Futbol';$country2 = new Country ();$country2->nombre = 'USA';$country2->poblacion = '200 millones';$country2->idioma = 'Ingles';$country2->moneda = 'Dolar estadounidense';$country2->economia = 'Multiples industrias';$country2->deporte = 'Basket,Baseball,Futbol Americano';$country3 = new Country ();$country3->nombre = 'Alemania';$country3->poblacion = '50 millones';$country3->idioma = 'Aleman';$country3->moneda = 'Euro';$country3->economia = 'Multiples industrias';$country3->deporte = 'Futbol';$countries = [$country1,$country2,$country3];foreach ($countries as $country){  **echo $country->¿? "<br>";**}  

Answer 1

foreach ($countries as $country) {

    foreach ($country as $k => $v) {

        echo $k . ': ' . $v . '<br>'; // nombre: Argentina ...

    }

}