(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.
This function has no parameters.
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());
?>
The above example will output something similar to:
string(1) "a"