数据结构
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The SplDoublyLinkedList class

(PHP 5 >= 5.3.0)

简介

The SplDoublyLinkedList class provides the main functionalities of a doubly linked list.

类摘要

SplDoublyLinkedList implements Iterator , ArrayAccess , Countable {
/* 方法 */
__construct ( void )
mixed bottom ( void )
int count ( void )
mixed current ( void )
int getIteratorMode ( void )
bool isEmpty ( void )
mixed key ( void )
void next ( void )
bool offsetExists ( mixed $index )
mixed offsetGet ( mixed $index )
void offsetSet ( mixed $index , mixed $newval )
void offsetUnset ( mixed $index )
mixed pop ( void )
void prev ( void )
void push ( mixed $value )
void rewind ( void )
public string serialize ( void )
void setIteratorMode ( int $mode )
mixed shift ( void )
mixed top ( void )
public void unserialize ( string $serialized )
void unshift ( mixed $value )
bool valid ( void )
}

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数据结构
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PHP手册 - N: The SplDoublyLinkedList class

用户评论:

rakesh dot mishra at gmail dot com (25-Jan-2011 01:17)

Here is simple examples of SplQueue: -
<?php
echo "Create Object of Spl. Queue:";
$obj = new SplQueue();

echo "<br>Check for Queue is Empty:";
if($obj->isEmpty())
{
    $obj->enqueue("Simple");
    $obj->enqueue("Example");
    $obj->enqueue("Of");
    $obj->enqueue("PHP");
}

echo "<br>View queue:";
print_r($obj);

if(! $obj->offsetExists(4))
{
    $obj->enqueue(10);
}

print_r($obj);

echo "<br>Get the value of the offset at 3 ";
if($obj->offsetGet(3))
{
    echo $obj->offsetGet(3);
   
    echo "<br>Resetting the value of a node:";
    $obj->offsetSet(4,6);
}
?>