note 74561 deleted from ref.array by felipe

Note Submitter: psbrogna at yahoo dot com 

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Why is a deep copy function needed to move a sub array? I've just used the equality operator as in the code below.

<?php

$a= array(
    'a'=>'apple',
    'b'=>'banana',
    'c'=>'cherry',
    'subArray'=>array(
      'A'=>'APPLE',
      'B'=>'BANANA',
      'C'=>'CHERRY'
    )
  );

$a['copiedArray']= $a['subArray']; unset($a['subArray']);

var_dump($a);

?>

The above outputs the $a array with copiedArray being present and subArray gone. (php version: 4.4.0).