Ds\Queue::peek

(PECL ds >= 1.0.0)

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

public function Ds\Queue::peek(): mixed

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

This function has no parameters.

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());
?>

The above example will output something similar to:

string(1) "a"