(PECL ds >= 1.0.0)
Ds\Queue::peek — Returns the value at the front of the queue
Returns the value at the front of the queue, but does not remove it.
Esta função não possui parâmetros.
The value at the front of the queue.
UnderflowException if empty.
Exemplo #1 Ds\Queue::peek() example
<?php
$queue = new \Ds\Queue();
$queue->push("a");
$queue->push("b");
$queue->push("c");
var_dump($queue->peek());
?>O exemplo acima produzirá algo semelhante a:
string(1) "a"