dynamic class property $$value in php

Question

How can i reference a class property knowing only a string?

class Foo

{

    public $bar;



    public function TestFoobar()

    {

        $this->foobar('bar');

    }



    public function foobar($string)

    {

         echo $this->$$string; //doesn't work

    }

}

what is the correct way to eval the string?

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Answer 1

You only need to use one $ when referencing an object's member variable using a string variable.

echo $this->$string;

dynamic class property $$value in php

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