PHP：如何遍历一个类的所有对象？

Question

我的数组，其中包含对象，这在他们的对象，例如代码：

<?php 
class person { 
    public $name; 
    public $foods=array(); 
} 
class food { 
    public $foodnames=array() ; 
} 
$peoplearray[$name] = new person; 
$peoplearray[$name]->name = 'john' ; 
$peoplearray[$name]->foods[$key] = new food; 
$peoplearray[$name]->foods[$key]->foodnames[$key] = 'ice cream' ; 
$peoplearray[$name]->foods[$key] = new food; 
$peoplearray[$name]->foods[$key]->foodnames[$key] = 'banana' ; 

$peoplearray[$name] = new person; 
$peoplearray[$name]->name = 'julie' ; 
$peoplearray[$name]->foods[$key] = new food; 
$peoplearray[$name]->foods[$key]->foodnames[$key] = 'chocolate' ; 
$peoplearray[$name]->foods[$key] = new food; 
$peoplearray[$name]->foods[$key]->foodnames[$key] = 'coffee' ; 
$peoplearray[$name]->foods[$key] = new food; 
$peoplearray[$name]->foods[$key]->foodnames[$key] = 'rice' ; 
?> 

现在我需要通过类食品中的所有对象过于重复，所以我可以取回他们的属性。任何人都知道这样做最有效的方法？

Answer 1

声明类食品静态属性，把你的食物对象在其构造时间：

class food { 
    public static $collection = array(); 
    // other properties ... 

    public function __construct() { 
    // Stuff 
    self::$collection[] = $this; 
    } 
} 

// Create foo objects 
$f = new food(); 

// Iterate 
foreach(food::$collection as $foodobj) { 
    // Stuff 
}