PHP | SplDoublyLinkedList unserialize()函数

SplDoublyLinkedList::unserialize()函数是PHP中的一个内置函数，用于反序列化 SplDoublyLinkedList::serialize()函数的存储。

句法：

void SplDoublyLinkedList::unserialize( string $serialized )

参数：此函数接受单个参数$serialized ，其中包含序列化的字符串。

返回值：此函数不返回任何值。

下面的程序说明了PHP中的 SplDoublyLinkedList::unserialize()函数：
方案一：

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);
  
?>

输出：

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
        )

)

方案二：

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);
  
?>

输出：

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
)

)

参考： https://www. PHP.net/manual/en/spldoublylinkedlist.unserialize。 PHP