[FIXED] Why does this simple code yield 'Undefined variable: bar'

Issue

class A {
    protected $bar = 'bar';
    public function foo() {
        echo $this->$bar;
    }
}

$a = new A();
$a->foo();

It's boggling my mind that this isn't working. I come from C++ and C# so it's likely something I don't understand about PHP.

Solution

When you access a member, you only need the dollar-sign before this; i.e. access it like this instead:

echo $this->bar;

Answered By - Peter Bloomfield

Answer Checked By - Mary Flores (PHPFixing Volunteer)