Question

我想从课外得到变数。

实施例，

的config.php

$config['function'] = array('filter_validate','form');

Controller.php这样

class Controller{

   public function __construct()
   {
       foreach ($config['function'] as $key => $function_class) {
          $function_class = new $function_class();
       }       
   }

}

但是，我无法在Controller中获得$ config ['function']变量。怎么办？

Answer 1

解决方案＃1（带参数）：

class Controller {
    public function __construct($config) {
        foreach ($config['function'] as $key => $function_class) {
          $function_class = new $function_class();
       }       
   }
}

解决方案＃2（global - 不推荐）：

class Controller {
    public function __construct() {
        global $config;
        foreach ($config['function'] as $key => $function_class) {
          $function_class = new $function_class();
       }       
   }
}

Answer 2

You need to pass config to the constructor, like this:

class Controller{

   public function __construct($config)
   {
       foreach ($config['function'] as $key => $function_class) {
          $function_class = new $function_class();
       }       
   }

}

$config['function'] = array('filter_validate','form');
$controller = new Controller($config);

Answer 3

任何类外的函数都是全局的，可以从任何地方调用。与变量相同..只记得使用全局变量。

<?php   
    function abc() {  }

    $foo = 'bar';

    class SomeClass {
        public    function tada(){
            global $foo;
            abc();
            echo 'foo and '.$foo;  
        }
    }
?>

从Class OOP PHP中获取变量

3 个答案: