SplDoublyLinkedList::push()

(PHP 5 >= 5.3.0, PHP 7)

Pushes an element at the end of the doubly linked list

说明

publicSplDoublyLinkedList::push(mixed $value) : void

Pushes$valueat the end of the doubly linked list.

参数

$value

The value to push.

返回值

没有返回值。

$spl = new SplDoublyLinkedList;
$spl->push(1);
$spl->push(2);
$spl->push(3);
$spl->push(8);
$spl->push(5);
print_r($spl);

You can also push an element at the end of the doubly linked list like in a simple array with square brackets:
$spl = new SplDoublyLinkedList;
$spl[] = 1;
$spl[] = 2;
$spl[] = 3;
$spl[] = 4;
print_r($spl);

Be careful SplStack mode is LIFO (Last In First Out) not FIFO (First in First Out) 
<?php
// Array (FIFO)
$stack = array();
array_push($stack,"orange");
array_push($stack,"banana");
array_push($stack,"apple");
array_push($stack,"raspberry");
var_dump($stack);
?>
// result
array (size=4)
 0 => string 'orange' (length=6)
 1 => string 'banana' (length=6)
 2 => string 'apple' (length=5)
 3 => string 'raspberry' (length=9)
<?php
// SplStack (LIFO)
$stack = new SplStack();
$stack ->push('orange');
$stack ->push('banana');
$stack ->push('apple');
$stack->push('raspberry');
$stack->rewind();
while($stack->valid()){
  var_dump($stack->current());
  $stack->next();
  
}
?>
//result 
string 'raspberry' (length=9)
string 'apple' (length=5)
string 'banana' (length=6)
string 'orange' (length=6)