Ds\Stack::peek

(PECL ds >= 1.0.0)

Ds\Stack::peek — Returns the value at the top of the stack

Descrierea

public Ds\Stack::peek ( void ) : mixed

Returns the value at the top of the stack, but does not remove it.

Parametri

Această funcție nu are parametri.

Valorile întoarse

The value at the top of the stack.

Erori/Excepții

UnderflowException if empty.

Exemple

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

<?php
$stack = new \Ds\Stack();

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

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

Exemplul de mai sus va afișa ceva similar cu:

string(1) "c"