Offset object reference to array

Question

So I can push the reference of an object into an array using &

$a = (object) array('a' => 1);
$b[]='test';
$b[] = &$a;
$a->b = 2;
var_dump($b);

Result:

array (size=2)
  0 => string 'test' (length=4)
  1 => &
    object(stdClass)[2]
      public 'a' => int 1
      public 'b' => int 2

But how can I "push" the link to the beginning of the array?

I tried

array_unshift($b, &$a);

But I got Fatal error: Call-time pass-by-reference has been removed

+3

php

andrew 21 jul. 15 at 12:02

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1 answer

deceze · Accepted Answer · 2015-07-21T12:07:03+0000

Since it's an object, it's $a

already (sort of) a reference by itself *. You don't need to spoof links at all &

:

array_unshift($b, $a);

* Objects are unique and are not copied when assigned. Changes to the object will be visible for all variables that share the object.