(PECL ds >= 1.0.0)
Ds\Deque::unshift — Adds values to the front of the deque.
Adds values to the front of the deque, moving all the current values forward to make room for the new values.
values
The values to add to the front of the deque.
Nota:
Multiple values will be added in the same order that they are passed.
Não há valor retornado.
Exemplo #1 Ds\Deque::unshift() example
<?php
$deque = new \Ds\Deque([1, 2, 3]);
$deque->unshift("a");
$deque->unshift("b", "c");
print_r($deque);
?>
O exemplo acima irá imprimir algo similar à:
Ds\Deque Object ( [0] => b [1] => c [2] => a [3] => 1 [4] => 2 [5] => 3 )