Question

大多数PHP IDE依靠phpdoc来获取有关表达式类型的提示。然而，我经常使用这种模式，似乎没有涉及：

class Control {
    private $label = '';

    /** @return ??? */
    public static function Make(){ return new static(); }

    /** @return ??? */
    public function WithLabel($value){  $this->label = $value;  return $this;  }

    /** @return void */
    public function Render(){ /* ... */ }
}

class Textbox extends Control {
   private $text = '';

    /** @return ??? */
    public function WithText($text){  $this->width = $text;  return $this;  }
}

现在我可以使用这样的类：

Textbox::Make()           // <-- late static binding, returns Textbox
   ->WithLabel('foo')     // <-- late dynamic binding, returns Textbox
   ->WithText('bar')      // <-- normal binding, returns Textbox
   ->Render();

有没有办法用某些东西替换'???'以便打字信息正确？

Answer 1

/** @return Control */

非静态：

/** @return $this */

但是没有在phpdoc手册中记录

Answer 2

更新了答案作为参考the most popular PHP IDE（PHPStorm 8）：

对于@return，您可以使用：

self
$this

对于@method，您可以使用：

$this

示例：

/**
 * Class Model
 * @method $this parentMethodA
 */
class Model
{
    /**
     * @return $this
     */
    public function parentMethodB()
    {
        return $this;
    }

    /**
     * @return self
     */
    public function parentMethodC()
    {
        return $this;
    }
}


/**
 * Class Person
 * @method $this childMethodA
 */
class Person extends Model
{
    /**
     * @return $this
     */
    public function childMethodB()
    {
        return $this;
    }

    /**
     * @return self
     */
    public function childMethodC()
    {
        return $this;
    }
}

$p = new Person();

//In the following lines IDE will recognize those variables as:
$t1 = $p->parentMethodA(); //Instance of Person
$t2 = $p->parentMethodB(); //Instance of Person
$t3 = $p->parentMethodC(); //Instance of Model
$t4 = $p->parentMethodA(); //Instance of Person
$t5 = $p->parentMethodB(); //Instance of Person
$t6 = $p->parentMethodC(); //Instance of Person

PHPStorm 10（EAP）的更新

现在似乎也可以使用static，但仅适用于@return。

Answer 3

更新了cvsguimaraes的回答以包含静态选项：

/**
 * Class Bar
 * @method $this parentMethodA
 */
class Bar
{
    /**
     * @return $this
     */
    public function parentMethodB()
    {
        return $this;
    }

    /**
     * @return self
     */
    public function parentMethodC()
    {
        return $this;
    }

    /**
     * @return static
     */
    public static function staticMethod()
    {
        return new static();
    }

    /**
     * @param $id
     *
     * @return bool
     */
    public function load($id)
    {
        // test
        return $id ? true : false;
    }

    /**
     * @param null $id
     *
     * @return static
     */
    public static function get($id = NULL){
        $obj = static::staticMethod();

        if (is_null($id)) {
            return $obj;
        }

        if ($obj->load($id)) {
            return $obj;
        }

        return false;
    }
}


/**
 * Class Foo
 * @method $this childMethodA
 */
class Foo extends Bar
{
    /**
     * @return $this
     */
    public function childMethodB()
    {
        return $this;
    }

    /**
     * @return self
     */
    public function childMethodC()
    {
        return $this;
    }
}

/**
 * Class Bar
 */
class Baz extends Bar 
{

}

$p = new Foo();

/** @var Foo $Foo */
$Foo = 'Foo';
$Baz = 'Bar';

//  IntelliJ recognizes the following as:
$t1 = $p->parentMethodA(); //Instance of Foo
$t2 = $p->parentMethodB(); //Instance of Foo
$t3 = $p->parentMethodC(); //Instance of Model
$t4 = $p->childMethodA(); //Instance of Foo
$t5 = $p->childMethodB(); //Instance of Foo
$t6 = $p->childMethodC(); //Instance of Foo
$t7 = $Foo::staticMethod(); //Instance of Foo
$t8 = Foo::staticMethod(); //Instance of Foo
$t9 = $p::staticMethod(); //Instance of Foo
$t10 = $Foo::get(); //Instance of Foo
$t12 = Bar::get(); //Instance of Bar
$t11 = $Baz::get(); // Unknown

PHPDoc和后期（静态或动态）绑定

3 个答案:

PHPStorm 10（EAP）的更新