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@ 2013-03-28T07:27:25Z

<?php

$q = new SplPriorityQueue();
$q->insert(1, 1);
$q->insert(2, 2);
$q->setExtractFlags(SplPriorityQueue::EXTR_BOTH);

$c = clone $q;
var_dump($q->top());
var_dump($c->top());

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

30.97 ms | 402 KiB | 5 Q