我有一个代码，其中数组包含对象，其中包含对象，例如：
<?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' ;
?>
现在我也需要遍历类food中的所有对象，以便获取它们的属性。有人知道最有效的方法吗？
在类food中声明一个静态属性，并在构造时将您的food对象放入其中：
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
}