PHP | SplDoublyLinkedList unserialize() Function
Last Updated :
21 Nov, 2019
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The SplDoublyLinkedList::unserialize() function is an inbuilt function in PHP which is used to unserialize the storage of SplDoublyLinkedList::serialize() function.
Syntax:
php
php
void SplDoublyLinkedList::unserialize( string $serialized )Parameters: This function accepts single parameter $serialized which holds the serialized string. Return Value: This function does not return any value. Below programs illustrate the SplDoublyLinkedList::unserialize() function in PHP: Program 1:
<?php
// Declare an empty SplDoublyLinkedList
$list = new SplDoublyLinkedList();
// Use SplDoublyLinkedList::push() function to
// add elements to the SplDoublyLinkedList
$list->push(1);
$list->push(2);
$list->push(3);
$list->push(8);
$list->push(5);
// Use SplDoublyLinkedList::serialize() function
// to serialize the object
$serialize = serialize($list);
echo $serialize . "\n";
// Use SplDoublyLinkedList::unserialize() function
// to unserialize the object
$unserialze = unserialize($serialize);
print_r($unserialze);
?>
Output:
Program 2:
C:19:"SplDoublyLinkedList":29:{i:0;:i:1;:i:2;:i:3;:i:8;:i:5;}
SplDoublyLinkedList Object
(
[flags:SplDoublyLinkedList:private] => 0
[dllist:SplDoublyLinkedList:private] => Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 8
[4] => 5
)
)
<?php
// Declare an empty SplDoublyLinkedList
$list = new SplDoublyLinkedList();
// Use SplDoublyLinkedList::add() function
// to add the element into the list
$list->add(0, "Welcome");
$list->add(1, "to");
$list->add(2, "GeeksforGeeks");
$list->add(3, "A");
$list->add(4, 'Computer');
$list->add(5, "Science");
$list->add(6, 'Portal');
// Use SplDoublyLinkedList::serialize() function
// to serialize the object
$serialize = serialize($list);
echo $serialize . "\n";
// Use SplDoublyLinkedList::unserialize() function
// to unserialize the object
$unserialze = unserialize($serialize);
print_r($unserialze);
?>
Output:
Reference: https://www.php.net/manual/en/spldoublylinkedlist.unserialize.php
C:19:"SplDoublyLinkedList":105:{i:0;:s:7:"Welcome";:s:2:"to";:s:13:"GeeksforGeeks";:s:1:"A";:s:8:"Computer";:s:7:"Science";:s:6:"Portal";} SplDoublyLinkedList Object ( [flags:SplDoublyLinkedList:private] => 0 [dllist:SplDoublyLinkedList:private] => Array ( [0] => Welcome [1] => to [2] => GeeksforGeeks [3] => A [4] => Computer [5] => Science [6] => Portal ) )
