Ds\Queue::peek

(PECL ds >= 1.0.0)

Ds\Queue::peek — Returns the value at the front of the queue.

public mixed Ds\Queue::peek ( void )

Returns the value at the front of the queue, but does not remove it.

Această funcție nu are parametri.

The value at the front of the queue.

Example #1 Ds\Queue::peek() example


<?php
$queue = new \Ds\Queue();

$queue->push("a");
$queue->push("b");
$queue->push("c");

var_dump($queue->peek());
?>

Exemplul de mai sus va afișa ceva similar cu:

string(1) "a"