array unshift php

1
2<?php
3$queue = array("orange", "banana");
4array_unshift($queue, "apple", "raspberry");
5print_r($queue);
6?>
7  Array
8(
9    [0] => apple
10    [1] => raspberry
11    [2] => orange
12    [3] => banana
13)
14
15

1
2<?php
3	$a=array("a"=>"red","b"=>"green");
4	array_unshift($a,"blue");
5	print_r($a);
6// result : Array ( [0] => blue [a] => red [b] => green )
7
8?>
9

1
2<?php
3
4 $a=array("a"=>"red","b"=>"green");
5array_unshift($a,"blue");
6print_r($a);
7
8?>
9 

1$cola = array("naranja", "banana");
2array_unshift($cola, "manzana", "frambuesa");
3print_r($cola);
4
5Array
6(
7    [0] => manzana
8    [1] => frambuesa
9    [2] => naranja
10    [3] => banana
11)