PHP

install php 7.4

sudo apt install php7.4-common php7.4-cli php7.4-bcmath php7.4-bz2 php7.4-curl php7.4-gd php7.4-intl php7.4-json php7.4-mbstring php7.4-readline php7.4-xml php7.4-zip php7.4-fpm

php version 7.4

function test(...$args) { var_dump($args); }
test(1, 2, 3);

php version 7.4

$arr = [...$args];

php version 7.4

array(5) {
	[0]=>
	string(6) "banana"
	[1]=>
	string(6) "orange"
	[2]=>
	string(5) "apple"
	[3]=>
	string(4) "pear"
	[4]=>
	string(10) "watermelon"
}

php version 5.6

pub   2048R/33CFC8B3 2014-01-14 [expires: 2020-01-13]
      Key fingerprint = 6E4F 6AB3 21FD C07F 2C33  2E3A C2BF 0BC4 33CF C8B3
uid                  Ferenc Kovacs <tyrael@php.net>

pub   2048R/90D90EC1 2013-07-18 [expire : 2016-07-17]
      Key fingerprint = 0BD7 8B5F 9750 0D45 0838  F95D FE85 7D9A 90D9 0EC1
uid                  Julien Pauli <jpauli@php.net>

download php 7.4

download XAMPP
https://www.apachefriends.org/download.html

php version 7.4

Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /app/spread-operator.php on line 3

php version 7.4

$parts = ['apple', 'pear'];
$fruits = ['banana', 'orange', ...$parts, 'watermelon'];
var_dump($fruits);