(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.
Questa funzione non contiene parametri.
The value at the front of the queue.
UnderflowException if empty.
Example #1 Ds\Queue::peek() example
<?php
$queue = new \Ds\Queue();
$queue->push("a");
$queue->push("b");
$queue->push("c");
var_dump($queue->peek());
?>Il precedente esempio visualizzerà qualcosa simile a:
string(1) "a"