PHP實(shí)戰(zhàn)
<?php
//final修飾的類不能被繼承
final class Person{
  var $name;
  var $age;
  var $sex;
  function __construct($name,$age,$sex){
    $this->name=$name;
    $this->age=$age;
    $this->sex=$sex;
  }
  function fun1(){
    echo $this->name;
  }
}
//Student類繼承類用final修飾的Person類,所以會(huì)報(bào)錯(cuò)
class Student extends Person{
}
$stu=new Student("zs",20,"nan");
$stu->fun1();
?>

PHP實(shí)戰(zhàn)
<?php
//定義一個(gè)類“人們”
class Person{
  protected $name;
  protected $age;
  protected $sex;
  static $country="中國(guó)";
  //聲明一個(gè)常量
  const RUN="走";
  //構(gòu)造方法
  function __construct($name,$age,$sex){
    $this->name=$name;
    $this->age=$age;
    $this->sex=$sex;
  }
  function getCountry(){
    //如果在類中使用靜態(tài)成員,可以使用self代表本類
    return self::$country;
  }
  function say(){
    echo "我的名字：{$this->name},我的年齡：{$this->age},我的性別：{$this->sex}.<br>";
  }
  protected function eat(){
    echo "吃飯!<br>";
  }
  function run(){
    //在類的內(nèi)部使用常量 self::常量
    echo self::RUN."<br>";
  }
  //聲明靜態(tài)的方法
  static function hello(){
    echo "你好<br>";
  }
}

PHP實(shí)戰(zhàn)
<?php
//定義一個(gè)類“人們”
class Person{
  protected $name;
  protected $age;
  protected $sex;
  static $country="中國(guó)";
  //聲明一個(gè)常量
  const RUN="走";
  //構(gòu)造方法
  function __construct($name,$age,$sex){
    $this->name=$name;
    $this->age=$age;
    $this->sex=$sex;
  }
  function getCountry(){
    //如果在類中使用靜態(tài)成員,可以使用self代表本類
    return self::$country;
  }
  function say(){
    echo "我的名字：{$this->name},我的年齡：{$this->age},我的性別：{$this->sex}.<br>";
  }
  protected function eat(){
    echo "吃飯!<br>";
  }
  function run(){
    //在類的內(nèi)部使用常量 self::常量
    echo self::RUN."<br>";
  }
  //處理一些不存在的錯(cuò)誤調(diào)用
  //就會(huì)在調(diào)用一個(gè)對(duì)象中不存在的方法時(shí)就會(huì)自動(dòng)調(diào)用
  function __call($methodName,$args){
    //$methodName調(diào)用不存在方法的方法名 $args里面的參數(shù)
    echo "你調(diào)用的方法{$methodName}(參數(shù)：";
    print_r($args);
    echo ")不存在<br>";
  }
  //聲明靜態(tài)的方法
  static function hello(){
    echo "你好<br>";
  }
}
$p=new Person("張三",20,"女");
$p->test(10,20,30);
$p->demo("aa","bb");
$p->say();
?>

PHP實(shí)戰(zhàn)
<?php
//定義一個(gè)類“人們”
class Person{
  protected $name;
  protected $age;
  protected $sex;
  static $country="中國(guó)";
  //聲明一個(gè)常量
  const RUN="走";
  //構(gòu)造方法
  function __construct($name,$age,$sex){
    $this->name=$name;
    $this->age=$age;
    $this->sex=$sex;
  }
  function say(){
    echo "我的名字：{$this->name},我的年齡：{$this->age},我的性別：{$this->sex}.<br>";
  }
  function __toString(){
    return self::$country."<br>{$this->name}<br>{$this->age}<br>{$this->sex}<br>".self::RUN;
  }
}
$p=new Person("張三",21,"女");
echo $p;
?>

PHP實(shí)戰(zhàn)
<?php
//定義一個(gè)類“人們”
class Person{
  var $name;
  protected $age;
  protected $sex;
  static $country="中國(guó)";
  //聲明一個(gè)常量
  const RUN="走";
  //構(gòu)造方法
  function __construct($name,$age,$sex){
    $this->name=$name;
    $this->age=$age;
    $this->sex=$sex;
  }
  function say(){
    echo "我的名字：{$this->name},我的年齡：{$this->age},我的性別：{$this->sex}.<br>";
  }
  function __clone(){
    $this->name="王五";
    $this->age=18;
    $this->sex="男";
  }
  function __destruct(){
    echo $this->name."<br>";
  }
}
$p=new Person("張三",21,"女");
$p->say();
//這并不能叫做克隆對(duì)象,因?yàn)樵谖鰳?gòu)時(shí)只析構(gòu)一次
/*$p1=$p;
$p1->name="李四";
$p1->say();*/
$p1= clone $p;
$p1->say();
?>

PHP實(shí)戰(zhàn)
<?php
function __autoload($className){
  include "./test/".$className.".class.php";
}
  $o=new One;
  $o->fun1();  
  $t=new Two;
  $t->fun2();
  $h=new Three;
  $h->fun3();
?>

PHP實(shí)戰(zhàn)
<?php
class One{
  function fun1(){
    echo "The Class One<br>";
  }
}
?>

PHP實(shí)戰(zhàn)
<?php
class Two{
  function fun2(){
    echo "The Class Two<br>";
  }
}
?>

PHP實(shí)戰(zhàn)
<?php
class Three{
  function fun3(){
    echo "The Class Three<br>";
  }
}
?>

PHP實(shí)戰(zhàn)
<?php
//定義一個(gè)類“人們”
class Person{
  var $name;
  protected $age;
  protected $sex;
  static $country="中國(guó)";
  //聲明一個(gè)常量
  const RUN="走";
  //構(gòu)造方法
  function __construct($name,$age,$sex){
    $this->name=$name;
    $this->age=$age;
    $this->sex=$sex;
  }
  function say(){
    echo "我的名字：{$this->name},我的年齡：{$this->age},我的性別：{$this->sex}.<br>";
  }
  function __clone(){
    $this->name="王五";
    $this->age=18;
    $this->sex="男";
  }
  //是在序列化時(shí)調(diào)用的方法,可以部分串行化對(duì)象
  function __sleep(){
    return array("name","age");
  }
  //是在反序列化時(shí)調(diào)用的方法,也是對(duì)象重新誕生的過(guò)程.可以改變里面的值
  function __wakeup(){
    $this->name="sanzhang";
    $this->age=$this->age+1;
  }
  function __destruct(){
  }
}
?>

PHP實(shí)戰(zhàn)
<?php
  require "11.php";
  
  $str=file_get_contents("mess.txt");
  $p=unserialize($str);
  echo $p->say();
?>

PHP實(shí)戰(zhàn)
<?php
  require "11.php";
  $p=new Person("張三",18,"男");
  $str=serialize($p);
  file_put_contents("mess.txt",$str);
?>