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I got this message from the validator of plugins from Envato:

  1. When creating a callable, never use &$this, use $this instead: https://envato.d.pr/uDWuiT

I think he may be wrong with his 'never use'. Are we really NOT SAVING a memory when we are passing an object by reference? Can only clarify on this?

Thank you.

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  • P.S. Can anyone add tag 'passing-by-reference' here, as I'm not allowed.
    – KestutisIT
    Commented Jan 17, 2019 at 19:52
  • No, we really don't need this tag! :)
    – fuxia ♦
    Commented Jan 17, 2019 at 20:45
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    Oh, and &$this is PHP 4 syntax. WordPress requires version 5 or 7 in which objects are always passed by reference.
    – fuxia ♦
    Commented Jan 17, 2019 at 20:46

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