Deque
PHP Manual

Ds\Deque::shift

(PECL ds >= 1.0.0)

Ds\Deque::shiftRemoves and returns the first value.

Descrição

public mixed Ds\Deque::shift ( void )

Removes and returns the first value.

Parâmetros

Esta função não possui parâmetros.

Valor Retornado

The first value, which was removed.

Erros

UnderflowException if empty.

Exemplos

Exemplo #1 Ds\Deque::shift() example

<?php
$deque 
= new \Ds\Deque(["a""b""c"]);

var_dump($deque->shift());
var_dump($deque->shift());
var_dump($deque->shift());
?>

O exemplo acima irá imprimir algo similar à:

string(1) "a"
string(1) "b"
string(1) "c"

Deque
PHP Manual