当我使用PHP数组时，为什么Zend Studio无法在对象上显示自动完成菜单？

Question

I seem to be having some trouble with my IDE or maybe my code. My IDE (ZendStudio 11 built on Eclipse) is not giving me auto-suggest methods on object when I put that object into a PHP native array construct.

As you will see below, auto-suggest work for things that do not have $this-> (object accessor) and do not have [$index] (array accessor), but fail to work after those accessors are present.

Consider the Code below

See comments for trouble areas

namespace Name\Space;

class PointArrayManager
{

    private $points;

    public function __construct()
    {
        $point = new Point();
        $point-> //brings up auto-complete for Point()

        $points[0] = new Point();
        $points[0]-> //brings up auto-complete for Point()

        $this->points[0] = new Point();
        $this->points[0]-> //FAILS to bring up auto-complete 
    }
}

What causes this issue and can I improve my code to have autosuggest anyway?

Answer 1

Your IDE has no way of knowing that your $points property is an array of Point objects. You will have to give it some help.

The way to do this is to comment your code, at the very least you will need to comment the declaration of the $points variable like this:-

/** @var Point[] $points */
private $points;

I don't use Zend Studio, but this works in PHPStorm, so I imagine it does in Zend Studio too.

Commenting your code like this is good practice and helps your IDE to know what you mean. It also helps with generation documentation. Most PHP IDE's use PHPDocumentor for comments, so the manual there is worth a read.

http://www.phpdoc.org/