PHP:如何在类中使用动态变量名';二传手


PHP: How to use dynamic variable name with a class' setter

我有一个类有一个私有成员"description",但它提出了一个setter:

class Foo {
  private $description;
  public function setDescription($description) { 
    $this->description = $description; 
  }
}

我有一个变量中成员的名称。我想动态访问该字段。如果这个领域只是公开的,我可以做:

$bar = "description";
$f = new Foo();
$f->$bar = "asdf";

但如果我只有二传手,我不知道该怎么办。

<?php
$bar = "description";
$f = new Foo();
$func="set"+ucwords($bar);
$f->$func("asdf");
?>

试试这个:

$bar = 'description';
$f = new Foo();
$f->{'set'.ucwords($bar)}('test');

这个函数来完成任务:

  private function bindEntityValues(Product $entity, array $data) {
      foreach ($data as $key => $value){
        $funcName = 'set'+ucwords($key);
        if(method_exists($entity, $funcName)) $entity->$funcName($value);
      }
    }

使用魔术设置

class Foo {
  private $description;
  function __set($name,$value)
  {
    $this->$name = $value;
  }  
/*public function setDescription($description) { 
    $this->description = $description; 
  }*/
}

但是通过这种方式,如果你只想描述一下,你所有的私人财产都将作为公共财产使用这个

class Foo {
      private $description;
      function __set($name,$value)
      {
        if($name == 'description')
        { $this->$name = $value;
          return true;
         }
         else 
        return false
      }  
    /*public function setDescription($description) { 
        $this->description = $description; 
      }*/
    }