Question

我希望我的PHP IDE（NuSphere PhpEd）检测我的2D数组元素（一个对象）的属性，在我的IDE中输入右箭头后，该属性的属性没有显示。

在PHP 7中是否有任何方法可以自动生成多维数组元素属性的建议，其中每个元素都是具有特定属性的对象？

<?php
    class Cell
    {
        private $color;

        public function __construct()
        {
            $this->color = "red";
        }

        public function __get($propertyName)
        {
            if ($propertyName == 'color')
                return $this->color;
        }

        public function __set($propertyName, $value)
        {
            if ($propertyName == 'color')
                $this->color = $value;         
        }
    }

    class Matrix implements ArrayAccess
    {
        private $matrix = array();

        public function __construct($maxX, $maxY)
        { 
            $this->matrix = array_fill(1, $maxX, array_fill(1, $maxY, null));
        }

        public function &offsetGet($name)
        {
            return $this->matrix[$name];
        }

        public function offsetSet($name, $value) 
        {
            $this->matrix[$name] = $value;
        }

        public function offsetExists($name)
        {
            return isset($this->matrix[$name]);
        }

        public function offsetUnset($name)
        {
            unset($this->matrix[$name]);
        }
    }


    $matrix = new Matrix(3,3);
    for ($xIdx = 1; $xIdx <= 3; $xIdx++)
       for ($yIdx = 1; $yIdx <= 3; $yIdx++)
            $matrix[$xIdx][$yIdx] = new Cell();

    $matrix[2][2]->color = "green";
    echo $matrix[2][2]->color;
?>

Answer 1

如果您乐意使用phpdoc注释，则可以使用Type[][]注释将变量声明为Type的2D数组。对于类属性，如下所示：

/** @var Cell[][] */
private $matrix = [];

或者类方法的返回值：

/**
 * @return Cell[][]
 */
public function getMatrix() {
    return $this->matrix;
}

在PHPStorm的情况下，提供了这个：

Answer 2

我尝试了一种解决方法，以强制phpdoc按照箭头选择我的属性或方法。

这就是我所做的。

class Matrix
{
     protected $maxX;
     protected $maxY;

     private $matrix = array();

     public function __construct($maxX, $maxY)
     {
         $this->maxX = $maxX;
         $this->maxY = $maxY;

         $this->matrix = array_fill(1, $maxX, array_fill(1, $maxY, 0));
         return $this;
     }

     public function getMaxX()
     {
        return $this->maxX;
     }

     public function getMaxY()
     {
        return $this->maxY;
     }

     public function get($x, $y)
     {
        if (isset($this->matrix[$x][$y]))
            return $this->matrix[$x][$y];
        throw new OutOfBoundsException("Array at indices $x, $y is out of bounds!");
     }
}

class Main
{
    public function __construct()
    {

    }

    public function setArrayVal($x, $y)
    {
         $cell = new Cell();
         //Set Value in some arbitrary method in Main Class
         $this->matrix($x, $y)->set($cell);
         //Or if $val is public in Cell class
         // $this->matrix($x, $y)->val = $cell;
    }
    //Method of Main Class
    public function matrix($x, $y) : Cell  //Note Cell here specified for type hinting
    {
        //Note, matrix below is a property, not method, whose type corresponds to the matrix class
        return $this->matrix->set($x, $y);
    }
}

class Cell
{
     private $val;

     public function __construct()
     {

     }

     // Method set in Cell class
     public function set($val)
     {
        $this->val = $val;
     }
}

PHP 7 Arrays - 检测2D数组元素的属性

2 个答案: