Question

需要加载参数才能运行，在飞行中创建变量名可怕的东西，但我没有看到另一种解决方案。此代码包含错误，请帮助

<?php 

class A{

  public $vars;
  public $tab_names;

  public $tab_names = array('car'=>'audi', 'honda' => 'name');
  public $tab_fruits = array('name'=>'banana', 'banana'=>'fruit');

public function load($varr){

  $$varr;

  $this->vars = $varr;

}

public function display(){

  return  $this->vars;

}  

}

$ob = new A;
$ob->load('tab_names');
$ob->display();



?>

Answer 1

喜欢这个？

public function load($varr){
  $this->vars = $this->$varr;
}

Answer 2

您应该创建单独的方法来返回不同类型的数据。如有必要，它们可以是“真实”功能的包装器：

public function displayCars() {
    return $this->tab_names;
}

public function displayFruit() {
    return $this->tab_fruits;
}

这将消除对变量变量的需求。

Answer 3

我认为你不能在开始时设置变量的值

public $tab_names = array('car'=>'audi', 'honda' => 'name');
public $tab_fruits = array('name'=>'banana', 'banana'=>'fruit');

应该是

public $tab_names;
public $tab_fruits;

然后

class A {
    public $vars;
    public $variables;
    public $tab_names;
    public $tab_fruits;

    public function __construct($variables){
        $this->variables = $variables;
    }

    public function load($varr){
        $this->vars = $this->variables[$varr];
    }

    public function display(){
        return $this->vars;
    }  

}

$variables = array();
$variables['tab_names'] = array('car'=>'audi', 'honda' => 'name');
$variables['tab_fruits'] = array('name'=>'banana', 'banana'=>'fruit');

$ob = new A($variables);
$ob->load('tab_names');
print_r($ob->display());

Answer 4

我就是这样做的：

class A {
    public $loaded_vars;

    public static $vars = array(
        'tab_names' => array('car'=>'audi', 'honda' => 'name'),
        'tab_fruits' => array('name'=>'banana', 'banana'=>'fruit')
      );

    public function load( $name ){
        $this->loaded_vars = self::$vars[ $name ];
    }

    public function display() {
        return  $this->loaded_vars;
    }
}

$ob = new A;
$ob->load( 'tab_names' );
$ob->display();

创建飞变量

4 个答案: