Php 有没有办法从数组中弹出最后一个元素并将其放在开头？

Question

I was wondering if it's possible with PHP to take the last element of an array and place that element at the beginning of the array.

When I Print my Array, it says something like this (I took away the whole urls):

Array ( 
    [0] => /bb-style.css 
    [1] => /bb-library.css 
    [2] => /bb-child.css 
    [3] => /bb-editor-style.css 
    [4] => /universal.css?cache=1584962088 
) 

So is there a way to get that last one to the top? I would really appreciate it if someone can tell me the exact code needed, because I often interpret stuff wrong and still can't figure it out when I get an answer.

Answer 1

Use array_pop() with array_unshift()

<?php

    // Get and remove last
    $last = array_pop($array);

    // Insert at beginning
    array_unshift($arr , $last);

---

Try it online!

Array
(
    [0] => 5
    [1] => 1
    [2] => 2
    [3] => 3
    [4] => 4
)

 Array ( [0] => 5 [1] => 1 [2] => 2 [3] => 3 [4] => 4 )

Answer 2

$arr = array("one");
$arr[] = "two";
$arr[] = "three";

print_r($arr); // one, two, three


$last = array_pop($arr); // remove last item ("three")

array_unshift($arr, $last); // add removed item($last = "three") to the begining.

print_r($arr); // three, one, two

Answer 3

You can do it use array_pop() with array_splice() like following :

$array = array(1,2,3,4,5,6);     
array_splice( $array, 0, 0,array_pop($array)); 
echo "<pre>";print_r($array);

Output :

Array
(
    [0] => 6
    [1] => 1
    [2] => 2
    [3] => 3
    [4] => 4
    [5] => 5
)