Err... What's wrong with this code??

[vitalyb]

	class a
	{
	    function get()
		{
		    return 'a';
		}
	}

class b
{	
	function b()	
	{
		$this->obj = new a;

		$var = empty($this->obj->get());
	}
}

What's wrong with this code?? I get:

Parse error: parse error, unexpected '(', expecting ')'

I can easily solve it by assigning a temp var to the $this->... but I am just curious about why it doesn't run. Anyone?

😕

[weekender]

i don't generally touch OOP, but put your code through a debugger and i think it wants

$var = empty($this->obj->get);

ie no () after get

[vitalyb]

That's not right.. It would b then the variable get, not the function.

[weekender]

look, when it gives you an error, it also gives a line number - the error is on that line, and there's only a few things it could be, so why don't you go have a tinker with it before posting?

[vitalyb]

The error is on this line

$var = empty($this->obj->get()); 

And I don't see anything wrong with it. I did tinker with it for quite some time until I decided to ask here.

[Moonglobe]

the problem is that empty() DOES NOT EXPECT A VALUE but rather a variable. what you're passing is the return value of a function, and not a variable. therefore it won't work your way.

[edit]PHP5 is much clearer on this:

Fatal Error: Can't use method return value in write context in blah on line blah

[/edit]

[vitalyb]

Hmm... And that is because empty accepts a reference, I guess?

[Moonglobe]

it's hard to describe... it just accepts a varible. it esentially is a refernce, but it's a language construct i think, and not a real function... although actually it probably is a function as there's already the isset construct. so ya. you're right.