SplDoublyLinkedList::unshift

(PHP 5 >= 5.3.0, PHP 7)

SplDoublyLinkedList::unshiftPrepends the doubly linked list with an element

说明

public void SplDoublyLinkedList::unshift ( mixed $value )

Prepends value at the beginning of the doubly linked list.

参数

value

The value to unshift.

返回值

没有返回值。

add a note add a note

User Contributed Notes 1 note

up
0
lincoln dot du dot j at gmail dot com
1 year ago
$dll = new SplDoublyLinkedList();
$dll->push(2);
$dll->push(3);
$dll->unshift(5); // add 5 beginning of the array
$dll->rewind();

while($dll->valid()){
    echo $dll->current()."\n";
    $dll->next();
}

Output

5
2
3
To Top