PHP | SplDoublyLinkedList unserialize() Function Last Updated : 21 Nov, 2019 Comments Improve Suggest changes Like Article Like Report The SplDoublyLinkedList::unserialize() function is an inbuilt function in PHP which is used to unserialize the storage of SplDoublyLinkedList::serialize() function. Syntax: 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 <?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: 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 ) ) Program 2: php <?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: 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 ) ) Reference: https://www.php.net/manual/en/spldoublylinkedlist.unserialize.php Comment More infoAdvertise with us Next Article PHP | SplDoublyLinkedList unserialize() Function J jit_t Follow Improve Article Tags : Web Technologies PHP PHP-function PHP- SplDoublyLinkedList Similar Reads PHP SplDoublyLinkedList unshift() Function The SplDoublyLinkedList::unshift() function is an inbuilt function in PHP which is used to add the element at the beginning of a doubly linked list. Syntax: void SplDoublyLinkedList::unshift( $value ) Parameters: This function accepts a single parameter $value which is used to unshift the value in a 2 min read PHP | SplDoublyLinkedList valid() Function The SplDoublyLinkedList::valid() function is an inbuilt function in PHP which is used to check whether the doubly linked list contains more nodes or not. Syntax: bool SplDoublyLinkedList::valid( void ) Parameters: This function does not accept any parameters. Return Value: This function returns TRUE 1 min read PHP SplDoublyLinkedList top() Function The SplDoublyLinkedList::top() function is an inbuilt function in PHP which is used to return the value of last (top) node in a doubly-linked list. Syntax: mixed SplDoublyLinkedList::top( void ) Parameters: This function does not accepts any parameters. Return Value: It returns the value of last nod 1 min read PHP SplDoublyLinkedList pop() Function The SplDoublyLinkedList::pop() function is an inbuilt function in PHP which is used to pop the node from the end of the doubly linked list. Syntax: mixed SplDoublyLinkedList::pop( void ) Parameters: This function does not accept any parameters. Return Value: This function returns the value of a popp 1 min read PHP SplDoublyLinkedList key() Function The SplDoublyLinkedList::key() function is an inbuilt function in PHP which is used to return the index of the current node. Syntax: mixed SplDoublyLinkedList::key( void ) Parameters: This function does not accepts any parameters. Return Value: It returns the index of current node. Below programs il 1 min read Like