Ds\Queue::peek
(PECL ds >= 1.0.0)
Ds\Queue::peek — Returns the value at the front of the queue
Descrição
Returns the value at the front of the queue, but does not remove it.
Parâmetros
Esta função não possui parâmetros.
Valor Retornado
The value at the front of the queue.
Erros
UnderflowException if empty.
Exemplos
Exemplo #1 Ds\Queue::peek() example
<?php
$queue = new \Ds\Queue();
$queue->push("a");
$queue->push("b");
$queue->push("c");
var_dump($queue->peek());
?>
O exemplo acima irá imprimir algo similar à:
string(1) "a"
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