SplDoublyLinkedList::isEmpty

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplDoublyLinkedList::isEmpty — Vérifie si la liste est vide

Description

public SplDoublyLinkedList::isEmpty(): bool

Liste de paramètres

Cette fonction ne contient aucun paramètre.

Valeurs de retour

Retourne si la liste est vide, ou non.

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User Contributed Notes 1 note

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lincoln dot du dot j at gmail dot com ¶

7 years ago

//isEmpty is a method of SplDoublyLinkedList 

$obj = new SplDoublyLinkedList();
// Check wither linked list is empty
if ($obj->isEmpty())
{
    $obj->push(2);
    $obj->unshift(10);
}
print_r($obj);

//Output like this
SplDoublyLinkedList Object
(
    [flags:SplDoublyLinkedList:private] => 0
    [dllist:SplDoublyLinkedList:private] => Array
        (
            [0] => 10
            [1] => 2
        )

)

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