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To: internals@lists.php.net
Date: Thu, 15 Sep 2005 12:35:48 +0200
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Subject: references in arrays
From: r.korving@xit.nl ("Ron Korving")

Hi,

For performance' sake, I have to know if this is true:

Is it the case that when I do this:

<?php
  $array = array("one" => array(0,1,2), "two" => array(4,5,6));
  $one = $array["one"];
?>

That $one is not a copy, but a reference to $array["one"] and will only
become a copy when I alter the contents of $one? I know this is the case for
regular variables, but does this also go for contents of arrays? If not, I
need to use the ampersand like I used to. But if it really is just a
reference, that would be good to know as I shouldn't be using the ampersand
at all (mistakingly thinking it's a performance advantage when it's actually
not).

Thanks,

Ron