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)
SplDoublyLinkedList::push
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplDoublyLinkedList::push — Pushes an element at the end of the doubly linked list
Descrizione
Pushes value at the end of the doubly linked list.
Elenco dei parametri
-
value -
The value to push.
Valori restituiti
Nessun valore viene restituito.
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User Contributed Notes 3 notes
Gilles A ¶
10 years ago
lincoln dot du dot j at gmail dot com ¶
7 years ago
$spl = new SplDoublyLinkedList;
$spl->push(1);
$spl->push(2);
$spl->push(3);
$spl->push(8);
$spl->push(5);
print_r($spl);
chicotec dot asm at gmail dot com ¶
5 years ago
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);
