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@ 2015-10-27T02:59:46Z

<?php
$arr1 = [1,2,3];
$arr2 = $arr1;

debug_zval_dump('arr2');
key($arr2);
debug_zval_dump('arr2');

unset($arr1);
unset($arr2);

$arr1 = [1,2,3];
$arr2 = $arr1;

debug_zval_dump('arr2');
key($arr2);
debug_zval_dump('arr2');

Output
Performance
VLD
References
Branches

debug_zval_dump: documentation ( source)
key: documentation ( source)

preferences:dark modelive preview

47.59 ms | 402 KiB | 5 Q