1 <?php 2     class Person 3     { 4         public $name; 5         public $age; 6         public function __construct($name,$age) 7         { 8             $this->name=$name; 9             $this->age=$age;10         }11         public function showInformation()12         {13             echo "<br/>姓名：".$this->name;14             echo "<br/>年龄：".$this->age;15         }16         public function __destruct()17         {18             echo "<br/>释放资源".$this->name;19         }20     }21     $zhangsan=new Person("张三",12);22     //$temp=$zhangsan;23     $zhangsan=null;24     $lisi=new Person("李四",13);25     $wangwu=new Person("王五",14);26 ?>