php empty check on param returns false on not empty variable

Question

class Renderer
{
    private $data;

    public function __construct()
    {
        $this->data = array();
    }

    public function __get($key)
    {
        return array_key_exists($key, $this->data) ? $this->data[$key] : null;
    }

    public function __set($key, $value)
    {
        $this->data[$key] = $value;
    }
}

When I check empty($renderer->param) it returns false even if var_dump($renderer->param) returns correct value.

Is it that php checks for parameter inside class when it's stored in array or am I missing something?

Pekka · Accepted Answer · 2013-07-19 14:32:41Z

3

You could (should?) implement an __isset() method. The manual on empty() says:

When using empty() on inaccessible object properties, the __isset() overloading method will be called, if declared.

answered Jul 19, 2013 at 14:32

Pekka

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2 Comments

Pinoniq Over a year ago

For your convenience, here is a snipplet for what you want: gist.github.com/pinoniq/6039523

insanebits Over a year ago

That was the case, thank you :) I would have had bad headache figuring it out, @Pinoniq thanks for snipplet too.

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