PHP容器类的两种实现方式示例


						本文实例讲述了PHP容器类的两种实现方式。分享给大家供大家参考，具体如下：

通过魔术方法实现

class





class MagicContainer{

  private $ele;

  function __construct()

  {

    $this->ele = [];

  }

  function __set($name, $value)

  {

    $this->ele[$name] = $value;

  }

  function __get($name)

  {

    return $this->ele[$name];

  }

  function __isset($name)

  {

    return isset($this->ele[$name]);

  }

  function __unset($name)

  {

    if(isset($this->ele[$name])){

      unset($this->ele[$name]);

    }

  }

}







usage





$container = new MagicContainer();

$container->logger = function ($msg){

  file_put_contents('info.log',$msg.PHP_EOL,FILE_APPEND);

};

$logger = $container->logger;

$logger('magic container works');







通过ArrayAccess接口实现

class





class ArrayContainer implements ArrayAccess {

  private $elements;

  public function __construct()

  {

    $this->elements = [];

  }

  public function offsetExists($offset){

    return isset($this->elements[$offset]);

  }

  public function offsetGet($offset){

    if($this->offsetExists($offset)){

      return $this->elements[$offset];

    }else{

      return false;

    }

  }

  public function offsetSet($offset, $value){

    $this->elements[$offset] = $value;

  }

  public function offsetUnset($offset){

    if($this->offsetExists($offset)){

      unset($this->elements[$offset]);

    }

  }

}







usage





$container = new ArrayContainer();

$container['logger'] = function ($msg){

  file_put_contents('info.log',$msg.PHP_EOL,FILE_APPEND);

};

$logger = $container['logger'];

$logger('array container works');







Container

class





class Container implements ArrayAccess {

  private $elements;

  public function __construct()

  {

    $this->elements = [];

  }

  public function offsetExists($offset){

    return isset($this->elements[$offset]);

  }

  public function offsetGet($offset){

    if($this->offsetExists($offset)){

      return $this->elements[$offset];

    }else{

      return false;

    }

  }

  public function offsetSet($offset, $value){

    $this->elements[$offset] = $value;

  }

  public function offsetUnset($offset){

    if($this->offsetExists($offset)){

      unset($this->elements[$offset]);

    }

  }

  function __set($name, $value)

  {

    $this->elements[$name] = $value;

  }

  function __get($name)

  {

    return $this->elements[$name];

  }

  function __isset($name)

  {

    return isset($this->elements[$name]);

  }

  function __unset($name)

  {

    if(isset($this->elements[$name])){

      unset($this->elements[$name]);

    }

  }

}







usage





$container = new Container();

$container['logger'] = function ($msg){

  file_put_contents('info.log',$msg.PHP_EOL,FILE_APPEND);

};

$logger = $container->logger;

$logger('container works');







更多关于PHP相关内容感兴趣的读者可查看本站专题：《php面向对象程序设计入门教程》、《PHP数组(Array)操作技巧大全》、《PHP基本语法入门教程》、《PHP运算与运算符用法总结》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。