PHP-da massivlarni splaysing qilish

Задание 1

Massiv berilgan:

php<?php
  $arr = [1, 2, 3, 4, 5];
?>

Undan elementlarni kesib oling, shunday qilib massiv quyidagicha bo'lsin:

php<?php
  [1, 4, 5]
?>

Задание 2

Massiv berilgan:

php<?php
  $arr = [1, 2, 3, 4, 5];
?>

Ushbu massivdan quyidagi kesimni oling:

php<?php
  [2, 3, 4]
?>

Задание 3

Massiv berilgan:

php<?php
  $arr = [1, 2, 3, 4, 5];
?>

Ushbu massivga yangi elementlar qo'shing:

php<?php
  [1, 2, 3, 'a', 'b', 'c', 4, 5]
?>

Задание 4

Massiv berilgan:

php<?php
  $arr = [1, 2, 3, 4, 5];
?>

Ushbu massivga yangi elementlar qo'shing:

php<?php
  [1, 'a', 'b', 2, 3, 4, 'c',  5, 'e']
?>