Question

So I know I can do something like this in PHP:

<?php

    $x = 'a';
    $a = 5;
    echo $$x;

Which will output 5;

But it doesn’t work with objects/properties. Is there a way to make this code work?

<?php

class FooBar
{
 public $foo;
 public $bar;

 public function __construct()
 {
  $this->foo = 'foo';
  $this->bar = 'bar';
 }
}

$FooBar = new FooBar();

$str = 'FooBar->foo';

echo $$str;

Answer 1

This might be close:

class FooBar
{
 public $foo;
 public $bar;

 public function __construct()
 {
  $this->foo = 'foo';
  $this->bar = 'bar';
 }
}

$FooBar = new FooBar();

$str = 'FooBar->foo';
list($class,$attribute) = explode('->',$str);

echo $$class->{$attribute};