PHP 7.2.0 Beta 1 Released

SplDoublyLinkedList::add

(PHP 5 >= 5.5.0, PHP 7)

SplDoublyLinkedList::addAdd/insert a new value at the specified index

Description

public void SplDoublyLinkedList::add ( mixed $index , mixed $newval )

Insert the value newval at the specified index, shuffling the previous value at that index (and all subsequent values) up through the list.

Parameters

index

The index where the new value is to be inserted.

newval

The new value for the index.

Return Values

No value is returned.

Errors/Exceptions

Throws OutOfRangeException when index is out of bounds or when index cannot be parsed as an integer.

add a note add a note

User Contributed Notes 2 notes

up
3
gandung at ppp dot cylab dot cmu dot edu
4 months ago
Maybe the basic usage is like this i think..

$a = new \SplDoublyLinkedList;

if ($a instanceof \SplDoublyLinkedList) {
    $a->add(0, 'Paulus');
    $a->add(1, 'Gandung');
    $a->add(2, 'Prakosa');

    // then, iterate over that because \SplDoublyLinkedList
    // is implementing \Iterator interface.
    foreach ($a as $value) {
        echo sprintf("%s\n", $value);
    }
}
up
1
lincoln dot du dot j at gmail dot com
13 days ago
$a = new SplDoublyLinkedList;
$arr=[1,2,3,4,5,6,7,8,9];

for($i=0;$i<count($arr);$i++){
    $a->add($i,$arr[$i]);
}

print_r($a);

//Output:

SplDoublyLinkedList Object
(
    [flags:SplDoublyLinkedList:private] => 0
    [dllist:SplDoublyLinkedList:private] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
            [3] => 4
            [4] => 5
            [5] => 6
            [6] => 7
            [7] => 8
            [8] => 9
        )

)
To Top